Looking for info on some Universal Geneves I’ve fallen in love with. I’ve picked up an 842101(pictured below) and an 842111, I’m on the hunt for an 842135. I know that they’re from the 70s and the 8 and the 42 in the reference number refer to the case material (steel) and the cal. 42 movement respectively, and that the 842111 looks a lot like the white shadow by Gerald Genta. Any info or context would be appreciated.