Omega Speedmaster Professional 345.808 rare Copper movement with box and papersThis is a very rare Speedmaster that was the first steel model to feature a display case back , at that time that this was for certain not common for brands even Patek did only have these on very specific models and or costumers wish .. Making the view that extra bit special, the manual wind calibre 863 movements were all copper coloured. A limited edition of 1000 pieces, this is number 02xx. These watches were also fitted with reference 1447