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Old 07-19-2012, 01:51 PM
dro57 dro57 is offline
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Date of Production on Colt 1911 Series 70




I recently aquired a Colt Mark IV Series 70 Government with serial prefix "SM24xxx" and was wondering if anyone knew the date of production? I have tried a couple of website databases and none have listed the "SM" prefix amongst the Mark IV Series 70's. The only reference to a "SM" prefix on the serial number was a run of Colt ACE 1911's, but their numeric sequence was far earlier than mine. Any help would be appreciated.
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Old 07-19-2012, 03:35 PM
pyunker45 pyunker45 is offline
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That would be a '79...and here is some reading for you.

http://forums.1911forum.com/showthre...ghlight=prefix
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Old 07-19-2012, 05:14 PM
dro57 dro57 is offline
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Thanks a bunch for that thread...it was very enlightening and informative.

It does answer why the "SM" prefix is so unusual and out of sequence with the other Mark IV Series 70's made during that era. I wouldn't doubt Colt used a rack of frames dedicated for the Ace models to complete a production of standard Government models.

The one I picked up needed a little TLC from my local gunsmith as it needed new grip panel bushings and the removal of a burr from the solid barrel bushing. The gunsmith gave it the once over and he said everything checks out and the trigger pull was nice and crisp. I'll have to get it down to the range one weekend after my 47D's arrive. The finish reflects it's age (30+ yrs old), but it's absent rust or pitting. I'm now debating if I want to completely upgrade it or just have it re-blued and keep it pretty stock. I was glad it came with the original walnut grip panels with the Colt medallions and a couple of blue Colt 7 rnd mags.
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