

I have a pair of Dutch fighting cocks and have managed to get the following from the marks, starting on the right and moving left:
the 'O' is 1949, the Minerva head with the 'A' is to do with the assay office, the lion above the 2 refers to .833 standard.
My questions are to what city does the 'A' mark refer? Amsterdam? And does anyone recognise what I presume to be the maker's mark on the far left?
Thank you so much