With a collet bushing and an "Accurizer" barrel?
Don't think so. Not Colt.
The internals of the pre-80s are original spec and will interchange with a 1911 built from 1911 through 1983, when the Series 80s appeared.
"Series70" has come to be a quick way of saying that it doesn't have the Series 80 lawyer parts, but Series 70 means that the gun was factory fitted with the collet bushing and the Accurizer barrel, which was the forerunner of today's barrels with the flared section at the muzzle. All Series 70 pistols were five inch guns...Government Model or Gold Cup. During the transition to Series 80, Colt...never being given to wasting good parts...did release a few Series 80s that had the Series 70 barrels and bushings, technically making them Series 70/80 pistols, but all were roll marked Series 80.
Neither is there any such thing as a Series 79/70 Series Springfield or RIA, et al. Series 70 and Series 8o are Colt trademarks.
At some point, someone...can't remember who offhand...did manufacture a collet bushing that was shortened to fit within the Commander's confines nd work with the modern flared barrel, but Colt had nothing to do with it and there weren't many of them.
Why make an issue of it?
If somebody asks his gun dealer to let him know the minute he gets in a decent Series 70 Commander and the dealer doesn't know the difference, he may let a few nice pre-80 Commanders come and go without making the call to his valued customer...because he'll be looking for a rollmark that he'll never see. I knew of that happening once about 10 years ago.