Critique my purchase!

This week I bought my first Polerouter off of ebay. I know the watch is a Frankenstein, but I'm not sure to which degree that is the case. I would like to ask the enlightened minds here to help me determine to which degree my purchase is an amalgamation. Thanks for your help!

Questions:
* How often does "Swiss T" show up with one lume pip at 12 o'clock?
* Does 215-2 ever come with a dial that does not list Microtor?
* Are there any resources for reproduction Gay-Freres endlinks? (I think the bracelet I ordered is for a much later model).

PS Has anyone seen a Polerouter Date with anything other than a "bricks" Gay Feres bracelet? Is anyone making reproduction endlinks for these bracelets?

Purchase link: https://www.ebay.com/itm/163613921517

https://i.ebayimg.com/images/g/vQEAAOSwU0hcQ5z0/s-l1600.jpg
https://i.ebayimg.com/images/g/0MwAAOSwXTVcQ50o/s-l1600.jpg
https://i.ebayimg.com/images/g/vQEAAOSwU0hcQ5z0/s-l1600.jpg

Comparing my enthusiasm to knowledge, enthusiasm wins by a landslide. Maybe that is clear in this posting, In any regard, thank you for your expertise and help. 😀

Looks like a 204612-1 to me (204612 are the only date dials like this to have a single lume dot at 12, but some also have 2).
If that is so, the movement has been swapped somewhere along the lines from a 218-2 to a 215-2 (easy enough to correct).
The bracelet is not original to the watch (it will be dated 65+), and the end links are aftermarket.

Polished?

Thanks for this.--the movement being switched out makes much more sense.

Yes I believe it has been polished.