Customs Window motor ID

Can anyone help me identify a window motor? It's a Delco out of my 50 Merc Lead Sled. The head is stamped 1 8 1-75. What appears to be a SN 1697346. The remanufactured tag has a number 91-0643-40. The warning lable tag has number 91-0894-42. It's also marked in yellow paint REMFG PN ?7. The illegible number could be a 1 or a 7. The gear has 6 teeth and measures 0.70" OD (tip to tip on teeth) and 0.34" ID. I've also included pictures.
Thanks

 

https://www.ebay.com/itm/295103417302

 

Thanks. That's the same one I found at NAPA but it doesn't have the gears in it.

 

Looks like the same motor used on every GM car in the early 70's.