While taking photos of K1964 Omega Moon watch, I've noticed something really unusual: there was something above the letters TER (speedmasTER). It looked like bit of dirt but under magnification it was clear that this was a 'metal left over' of casting / stamping during the manufacturing process!
Such imperfections are usually detected in foundry, or during assembly, engraving, polishing, or at least during final QC. Imperfect watch cases rarely appear on the market.
Strangely enough, this one slept through the net and neither the salesman or previous owner have noticed it.
Great conversation piece !