Cva More Condition_symptoms How Do I Find The Book Value Of My CVA .45 Caliber Muzzelloader.?

How do I find the book value of my CVA .45 caliber muzzelloader.? - cva more condition_symptoms

I have a .45 caliber muzzelloader I want to know what it is. I do not know the brand, but a blow with the serial number 004,914 in perfect condition. If you have any ideas?