Oyster Perpetual date 1500 dial question

[Jizzle69]

Hi all,

New poster so apologies if this is the wrong place/format etc. Inherited this nice gold oyster perpetual date a while back. Did some research on it and I believe the serial number dates the case to the mid ‘60s, however I haven’t seen another example with this gold dial with Roman numerals. Could this be a rare original dial or a dodgy replacement? Interested to hear everyone’s thoughts.

If better pictures would be of interest could potentially upgrade from my shoddy iPhone camera...