Its not an in house, but then neither is the Patek 5070 (also a Lemania base shared with the Speedmaster Pro).
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-- Omega Seamaster Grand-Lux Stepped Pie-Pan 14K Gold OJ2627 '53 --
-- Omega Cal 320 Chronograph 18K Gold OT2872 '58 --
-- Omega Cal 321 Speedmaster Pro 145.012 '67 --
-- Rolex Submariner 1680 "Ghost" '79 --
-- Rolex SS Daytona 116520 '04 --
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