My late uncle had 2 .22 rifles - Steven Arms Springfield Model 15 and a Mossberg 46M with a scope. Both of these are probably 65+ years old the model 15 may be 75. Don't think either have serial numbers. The 46M stock is in excellent condition. The Model15 is a nostalgia piece as the single shot and price back then made is the entry level rifle for young hunters. Any sense of value?