Omega 750.1516 day indicator (gold with black numbers)
As seen in photo.

The loose packed items have been kept in air tight plastic containers each labelled with the calibre number of the part. I am assuming that these are correct as they seem to match the parts list references I have but cannot guarantee this with 100% certainty. 

This part is from the material accumulated by a retired watchmaker in over 50 years in the trade.

Please see my other listings.