Using the design that was qualified for securing the mission chronograph to the spacesuit for lunar EVA, this is the long Apollo program watchband (part no. SEB12100030-202).
21½ inches in length.
Authentic P/N and S/N is as per NASA marking and identification standard JSC-SPEC-M1 used for every flown item in the NASA space program. Please be aware that the reflective ridges of grosgrain ribbon means the markings stand out best in diffuse or indirect lighting. Choice of
Typewriter font (S/N 1076) on brown/green Olive Drab shade #33070 or
Nylon loop tape to MIL-F-21840C sourced from 1970's U.S. Defense Supply Agency stock. Being one of the first types of hook and loop tape, the Olive Drab binding tape is actually essential for providing stitched fabric reinforcement. But as this dates from the Apollo era it's the ultimate in authenticity short of being furnished by NASA Flight Crew Integration Division (FCID).
No longer commercially available nylon hook tape #80 from "American Velcro Inc."
The binding tape is of the highest quality to military specification MIL-T-5038 and is stitched with V-T-295E mil-spec Nylon thread.
Metal ring fabricated to a unique 1/4 " gap unpolished aircraft-grade stainless steel, the matt finish matching the brushed steel watch case.