I think something missed by some is that you arranged ths watches in a different order in the first pic of three than in the next pics throughout the thread. Though you did mention "in no particular order". So I see comments that refer to #2 and #3 that are made for the other watch. You didn't help your effort by doing this. There are only two watches with 7mm crowns. #3 throughout has the correct 6mm crown, though you (maybe intentionally) never show its crown anywhere but the first pic of three, in which it is #2.
#1 throughout is first in the pic of three.
#2 throughout is third in the pic of three.
#3 throughout is second in the pic of three.
#1 looks to me like an old LF V1. LF is a second tier factory that only made a few different rep Rolex models, most notably the 16570 and 16710. Both those models changed pretty significantly for the worse when V2 was released. The LF V2 16570 Polar is the one with silver markers and silver hands. The V1 had black hands and dial markers. The V1 dial and bezel are not horrible, though it did have a large crown and bad CGs (inner CGs angled inward way too much). All the models and versions of Rolex LFs have the date window in the ETA/DG position regardless of movement. The DW on yours looks like it's a DG movement.
Link below is to the LF V2 16570 Polar. These are not bargain basement reps if you get a 2836, but they are not top tier either. Note the shape of the dial coronet and the relatively small size of the date window compared to the cyclops (like yours). Click on the attribute arrow to see what this costs with a DG movement. Remember this is a V2. Really not a bad beater at that price. You'd have to claim it was an early 16550 model due to the silver markers and hands though.
https://www.ts-stations.cn/mobile/goods.php?ProId=24213
#2 throughout is obviously the one you got for free and a complete heap of garbage. No further discussion needed.
#3 throughout is a BP 16570 and currently the best available one. The M832118 serial number is unique to BP and a dead giveaway. You can pick on it all you want for this flaw or that but for $268 with a 2836 GMT movement it's quite a nice rep IMO and a great base for modding if you're so inclined. Shape the lugs, CGs, drill the lugs, sand off the rehaut engravings, whatever. Or keep it stock and live the really cheap fantasy. I have two of them. One I converted into a 16710 with a sanded rehaut and rotating bezel back when 16710 reps were really scarce. The other one has had two fantasy iterations. I like this model so much I just bought a third one. So many variations on this theme I can't get enough, lol.
