The following is a fair guess with so little information. Brand Value level 4 (BV4 = Lessor known Continental maker's and/or associated with lower quality). Original Quality grade 7 (OQ7 = Border engraving BLE/1/3 engraved BLNE). Current Condition level 4 (CC4 = Heavy use, but no abuse). BV4-OQ7-CC4 = $616 for a 12 gauge gun. Premium for lower grade 20 gauge guns 1.5X to 1.75X against 12 gauge guns. So, $1000 +/- quite a bit seems like a fair guess based on what is stated above. More description and photos will narrow it down.