European Watch Clock and Jewellery Fair 1975 BF 122
A new concept in jewellery watches The case and dial are both made from the same piece of gemstone (tiger! s eye, lapis lazuli, jade, etc.) which is ground and bored as required. The sapphire or natural gemstone crystal is set in a yellow gold bezel which screws into the case back, also in gold. Selfwinding or drive-balance electronic movement with a quartz electronic movement coming soon. (VACUUM CHRONOMETER-CENTURY)