Valuation: Brown Bess

I have the greatest respect for the knowledge here and, anyway, I don't
know where else to post!<g>

Can someone give me an idea what a flintlock Brown Bess in good shootable
condition would be worth? The name "CLARK" is engraved on the lock.

I haven't seen this weapon for years but I did fire it in my youth. I
suspect it may have a cracked stock but it is otherwise in good condition.

BTW, this might be for sale.

Thanks.

Derry