Does anyone have any info. on these little .32 rimfire spur trigger "Nero" revolvers I have? Brass framed (nickle plated I guess but it's very worn), and I've managed to find out they were made by J. Rupertus. I'd be interested in when and how long they were made, and, are they for .32 rimfire short or long? I don't want to get expensive obsolete ammo and then find out it's the wrong one...Thanks.