BoR bracelet for Omega Constellation Pie Pan 14381 8 SC Cal. 551

Hello there!

I recently bought an Omega Constellation Pie Pan circa 1960 Cal. 551 Ref. 14381 8 SC (pictures below).







Now I'm thinking about buying beads of rice type bracelet that would fit the watch. Can You give me some advice, which type (bracelet ref.?) and end links fit the case best and where to search for BoR bracelets?

This can be both original Omega or something new, even "cheap" aftermarket BoR bracelet.

Any help appreciated.