Moss Green Ostrich Strap for a Vintage Seiko Lassale
The Seiko Lassale was Seiko's ultra-thin gold dress line, and the references have long been discontinued — so when the original strap wears out, there is no factory replacement to order. This build is a moss green ostrich leg strap for a gold Lassale (ref. 111712), sized 75/115 mm with a slim gold buckle that keeps the watch as low and dressy as it was designed to be.
Strap specifications
| Watch | Seiko Lassale (ref. 111712) |
|---|---|
| Leather | Moss green ostrich leg |
| Length | 75/115 mm (3.0 / 4.5 in) |
| Buckle width | 18 mm |
| Buckle | Slim, gold |
| Spring bars | Regular (tool removal) |
Why these choices
A thin gold dress watch lives or dies on proportions, so a slim gold buckle was the starting point. It keeps the strap low against the wrist and the only metal on the leather agrees with the gold case rather than fighting it. A chunky buckle would undo everything the Lassale's case is trying to do.
Moss green ostrich leg is the character choice. The leg hide carries a natural columnar grain that adds quiet texture and depth up close, without the bulk of a padded strap, and moss green warms a gold case in a way black or brown cannot. It is an unexpected colour that still reads as grown-up on a dress watch.
The strap uses standard spring bars for tool removal, which suits a vintage piece where the lugs are best handled carefully rather than with a quick-release fitting. Cut to 75/115 mm, it sits cleanly on a mid-size wrist.
★★★★★
“This strap exceeds all expectations. The comfortable is unmatched as well as the function and style. It’s the official soulmate to my Seiko Alpinist SPB507. The colors blend perfectly in every aspect with this band and watch combination.”
Jett W. · Moss green ostrich leg strap
Questions about this build
Can you make an ostrich leg strap for a vintage Seiko Lassale?
Yes. Because the Lassale is discontinued, a made-to-order strap is often the only way to fit one well. We cut to your watch's lug width and the length you need, so an old reference gets a strap that actually fits.
How do I know what size to order for a vintage watch?
Measure the gap between the lugs in millimetres and your wrist circumference. Send those, or clear photos with a ruler, and we will confirm the width and length before cutting.
We build straps for discontinued and vintage watches every week as part of our custom leather watch straps range. See the ostrich leather and green leather collections, or start with the moss green ostrich leg strap shown here — allow 2–3 weeks to delivery.
Fitting another Seiko? Our Seiko watch straps page lists lug widths across the range, so you can check yours before you order.