Discontinued Proprietary Strap Sourcing Guide: Finding a Replacement Strap for a Discontinued or Proprietary Watch

You just picked up a vintage watch from a defunct brand at a flea market, or maybe you inherited a fashion-brand quartz piece with a worn-out strap that you want to keep alive. You search online for the brand name plus “replacement strap,” and you get nothing — or worse, you find a listing that says “discontinued, no longer available.” That hollow feeling is familiar to anyone who owns an orphaned watch. The standard aftermarket routes don’t work because the strap was never standard to begin with.

This guide is for that exact situation. We’re not going to tell you to just “measure the lug width and buy a generic strap” — because if you’re reading this, you already know that doesn’t solve the problem. Instead, we’ll walk through the real, sometimes gritty process of finding a replacement strap for a discontinued or proprietary watch, from measuring everything yourself to knowing when to walk away from a lost cause.

Why Some Straps Become Nearly Impossible to Source

Not all discontinued watches are hard to re-strap. If your watch uses standard 20mm or 22mm spring-bar attachments, you can buy a new strap from a hundred different sellers today, even if the brand itself went under in 1985. The problem starts when the strap is proprietary — meaning the watch was designed so that only the brand’s own strap fits.

There are three main ways a strap becomes a dead end:

• Proprietary attachment systems — The strap doesn’t use normal spring bars. Instead, it slides into a channel, clicks into a locking mechanism, or requires a specific tool to remove. Think of older Swatch models, some Nixon designs, or early smartwatches.
• Integrated lugs — The strap is molded to follow the exact curve of the case, and a straight-end strap leaves unsightly gaps. Many vintage Seiko “Tuna” models and some Omega references have this issue, but it’s especially common in fashion watches from the 1990s and 2000s.
• Defunct brand with no parts stock — The company is gone, and nobody bought their remaining strap inventory. Even if the attachment is standard, you can’t find a strap branded for that watch anymore, and generic alternatives may not match the original look.

Step 1: Measure Everything Yourself Rather Than Relying on the Brand Name

Your first instinct might be to search for “replacement strap for discontinued watch brand” and hope someone has the exact part number in a dusty drawer. That almost never works. Brand names are unreliable for discontinued models because the same watch model was sometimes produced with different strap sizes across different years or markets.

Instead, measure the watch itself. You need four dimensions, and you need them in millimeters — not “about 18mm” or “looks like 20.”

Once you have these numbers, you can stop searching by brand name and start searching by dimensions. That alone opens up options you didn’t have before.

Where to Actually Look: Watch Forums, Part Specialists, and Custom Strap Makers

After you’ve measured everything, the next question is where to hunt. The usual suspects — Amazon, eBay, generic watch strap sites — will fail you for truly obscure pieces. You need to go deeper.

Watch Forums and Enthusiast Communities

This is your best bet for an out of production watch band from a known brand. Forums like WatchUSeek, Reddit’s r/WatchExchange, and brand-specific forums (like the Seiko or Omega forums) have classified sections where collectors sell off spare straps. The trick is to post a “Wanted” ad with your exact measurements, not just a brand name.

Be specific: “Looking for a 20mm integrated rubber strap with 45mm lug-to-lug, curved ends, for a 1990s Citizen Promaster” will get more responses than “Need strap for old Citizen.”

Part Specialists and NOS (New Old Stock) Dealers

Some businesses exist specifically to buy up the remaining inventory of defunct watch brands and sell it piece by piece. These are not well-advertised on Google. You find them through forum posts, Instagram accounts, and word of mouth. A few examples include:

• Esslinger — Good for generic replacement parts, less so for proprietary straps, but worth checking.
• Ofrei — Carries some NOS straps for older Swiss brands.
• Vintage watch strap dealers on Etsy — Many are just flipping generic straps, but some specialize in obscure dead stock. Look for sellers who list measurements, not just brand names.

Custom Strap Makers

When the forums and NOS dealers come up empty, custom fabrication is your real path forward. A skilled strap maker can replicate almost any proprietary strap design — including curved ends, custom attachment points, and unusual widths — as long as you provide the measurements and the old strap as a template.

Custom makers typically work in leather, rubber, or silicone. They cannot always replicate the exact look of a molded rubber strap from the 1990s, but they can get close. The key is finding a maker who has experience with integrated lugs, not just standard straight-end straps.

Adapter and Custom-Fabrication Options When Nothing Off-the-Shelf Fits

Sometimes the strap itself is not the problem — the attachment system is. You might have a watch with a proprietary lug design that doesn’t accept standard spring bars. In that case, you need an adapter.

Adapters are small metal or plastic pieces that convert a proprietary attachment point into a standard lug width. They exist for several common proprietary systems:

If your watch doesn’t have a known adapter, you have two options: find a machinist who can make a one-off piece (expensive, typically $100–$300 for a single small metal part), or go the custom fabrication route where the strap itself is built around the attachment point.

When to Consider a Case/Lug Modification (And Why That’s a Last Resort)

At some point in your search, someone will suggest modifying the watch itself — grinding down the lugs, drilling new spring-bar holes, or removing proprietary attachment points. This is a real option, but it comes with serious consequences.

Case modification is irreversible. Once you cut into the lugs, you cannot go back. The watch’s value drops significantly, even if it was already a cheap fashion watch. For a sentimental piece, that might not matter. But for a vintage collector’s item, it’s a disaster.

Here is when modification might be acceptable:

• The watch has no significant resale value (sub-$100 fashion brand, no collector interest).
• The proprietary strap is completely unobtainable and the watch is otherwise unwearable.
• You have a machinist who can do the work cleanly — not a Dremel tool in your garage.

And here is when it is not:

• The watch is a known collector’s model, even if it’s not expensive.
• The proprietary strap is rare but still available through forums or NOS dealers.
• You haven’t exhausted custom strap fabrication yet.

If you do decide to go ahead, the most common modification is widening the lug channel to accept a standard spring bar, or drilling new spring-bar holes closer to the lug tip. This requires precision tools and experience. A local watchmaker may do it for $50–$150, but many will refuse because of the risk of damaging the case.

Realistic Cost and Time Expectations for a Custom Solution

Let’s be straightforward: finding a replacement strap for an orphaned watch is rarely cheap or fast. If you want a quick $15 Amazon strap, this is not the path for you. Custom solutions cost more and take longer, but they work.

Time expectations are equally important. A custom strap maker typically has a backlog of 4 to 12 weeks. NOS hunting on forums can take months of daily checking. If you need the watch wearable for an event next month, you are better off buying a cheap generic strap that fits poorly temporarily, then ordering the custom solution for later.

One more thing to keep in mind: custom strap makers often require a deposit, and they will not start work until they have your exact measurements and, ideally, the old strap in hand. Ship the old strap to them if possible — it gives them a physical template to work from and reduces the chance of a fitment error.

When to Let the Watch Go

Not every orphaned watch is worth saving. If the cost of a custom strap exceeds the value of the watch itself — and the watch has no sentimental significance — it may be time to sell it as a parts donor or display piece and move on. There is no shame in admitting that a particular watch is beyond practical restoration.

But if the watch matters to you, the path is clear: measure everything, search forums and NOS dealers first, go custom if needed, and only modify the case as a final resort. The strap you end up with may not be original, but it will be yours — and the watch will be back on your wrist where it belongs.