Omega Reference 196.006 Beta 21 Movement in 18kt Yellow GoldThis is a very interesting and rare Omega that houses a Beta 21 movement. In the early 60s, a number of prominent brands collaborated on the development of what became known the Beta 21 movement at the Centre Electronique Horologer (CEH). Patek used it in their Cercle dOr, Omega in their Electroquartz pieces and Rolex in the 5100. This Omega is a really hefty beast,208 grams 18k gold case that measure 43x37mm and is 15mm thick ! The case has a left