Warren, the small caliber barrels are collectors.
My first handgun (12 years old) was a Colt Official Police in 32-20 Win. It belonged to and came from my grandfather's hardware store. The store burned down in 1938 so that puts a date range on it.
It was his carry gun back when you didn't need a permit. I still have it today. It will go about 90% cosmetically but I would not sell it for anything except crazy money. I also have a Winchester model 43 rifle in 218 Bee and a Savage 23 rifle in 32-20. They are what I call "hardware store rifles". I think one came from Western Auto years ago.
That being said I have always liked the cartridges based on the 32-20 (25-20 & 218 Bee). That lead me to collect the small caliber Contender barrels but I don't fire them except a couple of time just to say I did.
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Tom Welch
RKS #4868