this section is mainly focus on the develpoment of bb movement from the 30's. there are 3 series of movement being 1)8 3/4 with watchmaker intruction 2) autor rotor 3) perpetual.
examples in the picture is a full watchmarker instruction 8 3/4" prototype movement
1st series bb, watchmaker instruction movement
this is an all original first automatic watch by rolex, it is so different from the later model, it has a full watchmaker instruction movement, big barrel crown, 3 pieces case, this is a historic piece, do not miss!!!