I recently purchased an excellent condition Long Range field grade in 12 gauge. After looking through Stubbendieck’s resource book, it appears that I have the only Field grade with a beavertail forend out of 2,035 field grade long range guns. All the numbers match and the number is even stamped into the inside of the forend. My question is whether the value is negligible due to it being a field grade or not? Either way, very cool. Thank you for any insight you may offer.