17.2mm 1960s Stainless Steel USA Made nos Vintage Watch Band Uniflex Expansion

NOS unused 1960s old-stock Bellavance Uniflex USA stainless steel expansion watch bracelet. A slim 1/8" (2.4mm) profile, as opposed the more common 3/16" (4mm) expansions. 17.2mm straight ends you can size to 5/8" (just under 16mm), see last picture. Tell us what size spring bars to include. The length at the spring bars is 5 1/2" (140mm) every link is removable. 40B.15856