Looks like BV3 for Tranter. Looks to be a well engraved "B" grade (OQ3) - good wwod might bump it to suggest OQ2.5. Gray reciever, wood extension, and (appears to me) reblacked barrels suggest heavy use but no abuse" (CC4). BV3-OQ2.5,CC4 = $4900. I'd think $1000 either way on personal inspection.