I took the time to inspect (remove the floorplate) 300 of the right-hand A-O mags to deteremine which variation they were. I found 13 with MSCO stamped inside the backstrap. The rest were about a 60/40 mix of USCO and blank inside the backstap. There were also 24 of the left-hand A-O mags in the 880.
Before any of you ask, yes, I did find a couple nuggets in the shipment. There was one patent date 24/24 with MSCO inside the backstrap. I found it in the last 50 that I opened, so diligence (some may have another word for it...) did pay off. I also found two WPS mags. These three went home with me, as did some of their A-O and Seymour brethren.
I have no financial interest in these mags, but if any of you are looking for NOS Thompson XX mags, I suggest you contact Ohio Ordnance Works (440-285-3481) and ask for "Karl". He is asking $30 each, but drops the price to $25 each for 3 or more. He will have some of the mags at the Louisville show on Feb. 26-27, so those attending can see them first hand.
Never thought I would spend a day sifting through a pile of Thompson mags, but then I never expected to see a crate of NOS XX mags either. What we do for our hobby........
I forgot to mention that these mags are simply lightly oiled. They do not have cosmoline on them, so there is no cleanup required.
Edited by TSMG28, 22 February 2005 - 09:25 AM.