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No published sn data
The CVA 45 caliber blackpowder with the serial number 0025524, could only be 2 years old by the year 2014.
It will be marked on the barrel.
Without the serial number, the question can't be answered
The company that made it or the dealer that sold it to you can find out what kind of pistol and know the calibur.
To find the value, you need to know the condition and serial number of the gun. This will tell its age, and production information. serial # 20088, condition excellent
Several rifles were made in .25-20 caliber. The manufacturer and model number need to be identified as well as the serial to determine the date of manufacture.
The question can't be answered unless you provide the name of the maker. Even then, the data may not exist.
Not without a detailed description of all markings, features, box, papers, accessories, etc..
The Hopkins & Allen 832 was chambered in .32 RinFire Short.
50-450 usd
Serial 16008