Home Watch - Louis Rossel

European Watch Clock and Jewellery Fair 1975 BF 252
A really scratchproof watch: the case surface has been subjected to a titanium carbide hardening treatment (hardness : 40000 Vickers) and can thus withstand a lot of rough treatment. The dial is protected by a diamond-cut scratchproof sapphire crystal while the chrome-steel bracelet registers 1000° on the Vickers scale Automatic movement, day and date calendar, water-resistant case, (HOME WATCH - Louis Rossel)