Joray Wyss: the unfindable “concentricity tester”
{Appeared in the “Joray & Wyss 80 years” JSH’s Hors-Série}. A little rummaging in the attics of Joray & Wyss history has yielded a unique machine that will delight vintage collectors worldwide. By Ollivier Broto, Expert Columnist / 1876 News Agency for Swiss Watch Passport & JSH Magazine Insta SWP | Insta JSH® | Facebook…
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