Thanks for the link to the VetroPlastica forum, and thank God for Babelfish and Google Translate -- in a roundabout way, one of the discoveries I made from my visit to VetroPlastica was the identity of the company that made the GF stainless-steel "Grain-of-Rice" bracelet on my Autavia, which is marked "Breveté G (engraving of goat's head) F Steelinox" ("Breveté" of course means "patented). The company is Gay Fréres of Geneva, and is still in business today, mostly in high-end (and pretty high-tech) jewelry. Here's the blurb from their site (http://www.gayfreres.com):

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Their connection to Tissot is obvious, and they have long been connected with Rolex and, of course, Heuer.

Peace

Bart