swoobie, for a 1890ish to 1960ish best sle in 12 bore the valuation would be as follows. Brand Value two (BV2) for the WR name. Original Quality grade one (OQ1) for a best SLE. Current Condition as you describe could be CC1 to CC1.5.

BV2-OQ1-CC1 = $30,000 BV2-OQ1-CC1.5 = $25,500. Don't know if that helps or muddies the water, but there it is.

DDA