Need Help With Four M1911 "Two-Tone" Magazines

[pwcosol]

Got a tub of various Colt M1911 (and some others) magazines from a friend recently. Among them were the four pictured "two-tone" magazines. I have reviewed copious notes taken from the M1911 Magazine Identification pinned thread, but could not be sure of three out of four of them. The first mag has a pinned floorplate and blued follower. Second mag has a pinned floorplate as well, but ramp of follower is finished in white. Third mag is identical to the first (including follower), but exhibits spot-welds securing the floorplate and the "L" is absent. The last one (Post#2 and only example with a lanyard loop) would have been the best... if not for some bonehead taking a hack saw to the upper right side of the hull above the catch slot to add another. What possible purpose this butchery accomplished eludes me. However, my question here is, can (or should) I attempt to at least render a cosmetic repair with something like silver solder to fill-in the gap (as any type of welding like TIG might cause a even bigger problem). Thoughts and/or recommendations welcome...

C TT 1a.JPGAttachment 6445C TT 2a.JPGC TT 2b.JPGC TT 2c.JPGC TT 1b.JPG

[pwcosol]

The four additional photos from post#1:

C TT 3a.JPGC TT 4a.JPGC TT 4b.JPGC TT 4c.JPG

[Doran]

Difficult for me to determine which photos go with which descriptions.

Looped magazine Canadian Broad Arrow marked; done with replacement magazines. Notches usually added for single shot operation though I don't know if that's the case here..

Magazine above the Canadian is postwar dipped in something to remove the blue. Some of the other photos appear dipped also.

Dimple removed in the follower photo which also removed the blue.