These are my Coonans; an original Model B (full-size) and Cadet (call it a Commander size).
I bought them earlier this year; from a collector who had never shot them. With their boxes, papers, magazine loading tools, etc. they were $2,000.
Regarding the reliability issues reported with original Coonans: original magazines are/were finickey; issues with the feed lips were some of the issues encountered. According to the owner's manual for the Model B, after breaking the gun in (200 rounds) .38 Special rounds could be shot but a weaker recoil spring and a spacer in the magazine was required. Liberal application of white lithium grease was recommended back then; but according to Kurmudgeon on the 1911forum (who built Coonans and now builds quality magazines) Mobil 1 synthetic oil is a good substitute.
I've put about 50 rounds through each of my Coonans with only 2 failures (in the Cadet) when the round failed to chamber fully. A gentle push on the slide fixed that.
I intend to buy some of the new magazines and recoil springs after I break the pistols in so I can shoot .38 Special without using spacers.