Where do I find out what mirror I have, I do have part no.

1971-74 MOPAR E-BODY, 1971-72 B-BODY, RIGHT DOOR REAR VIEW MIRROR, VGC | eBay

&

1971-72 B Body 71-74 E Body Original Mopar OEM 3548730 Chrome Right Hand Mirror | eBay

Just for fun, what does the date code star wheel show?

The number does not come up in my '70-'71 parts book.