The Speedy Tuesday leather strap number is CUZ007061.
However, after having handled one I'd actually caution against ordering it. The reasons are as follows:
The strap is a 20/18, so it barely has any taper and the two-stitch style doesn't really work all that well with a non-tapered design.
The leather isn't the novanappa or barenia that's found on the Omega leather nato and deploy straps. The finish is a bit harder, more plasticky for lack of a better word. While this will help in keeping the look and finish, it doesn't have the nice rich feel and stretch news of the other aforementioned straps.
There's no padding in the strap whatsoever. If the leather was softer that wouldn't be a problem, but as mentioned before it's a stiffer hide than other OEM Omega leathers.
The buckle with the large Omega insignia is not my favorite as it adds bulk and thickness to an area which is a pressure point. While it's keeping with the overall vintage aesthetic, it's also paired to a non-tapered strap which goes against said aesthetics.
Options from other makers are more comfortable, better matched aesthetically and cost less. The only benefit for getting the Speedy Tuesday leather strap is to have a compete matching set. Otherwise the alternatives are a better choice.
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