1675 Datewheel question

[eVojlib]

Hey guys, got a quick question about a possible datewheel replacement on my 1675 but im not sure about what the seller is telling me.

I decided to have the RSC service dial installed because I love the way the luminova looks, however, after replacing the dial I noticed how yellowed my datewheel has become and some numbers are slightly damaged and I would like to fix this.

I have the oppertunity to buy a new service datewheel and wanted to be clear on somthing. The datewheel has usual font like my current dw but the threes are round top, the six and nine's are closed and the four is flat top like normal.

After looking around a bit i've been able to find 1675's from around 1979-1980 that have this type of datehweel installed and I wondered is it possible that rolex made these from the factory or were they installed when the watch had service.

I plan to keep all of the original parts removed in case I were to part ways with the watch, but I highly doubt I ever will.

Any opinions that this particular datewheel was offered for a 1675 not 16750.

Thanks guys

J