The Santa Barbara I've seen sold were $350 on up to $700. A lot of collectors look at the cylinder condition. If it has deep bolt rings the value goes down. No ring the more value. Ive had three of them. They are very well made revolvers. A Pietta cylinder fits good. An Uberti cylinder works but has too much cylinder to barrel gap. Overall condition is important to collectors. Scratches and dings sort of thing.
The 1849 pocket is actually called a 31 caliber. Might be an Armi San Marco. There were some made by other Italian manufacturers. You can usually tell by the fit and finish. Uberti makes them but in the steel frame. Without the loading lever they call it a Wells Fargo.
By the looks of yours, looks like machine marks? Might have been a kit. There were various manufacturers in this model. They are notorious for cap jams. Being a brass frame, I would value it at $150 up and no more than $250. But it all comes down to condition. Parts are obsolete. If it is an ASM, Uberti parts might work. Sometimes the cylinder and barrel will interchange with the Uberti. I've had about three in parts and couldn't make a whole one out of the three. Sold them off as parts.
I have an Uberti and an ASM Wells Fargo.
The pictures are examples.
