I recently picked up a Marlin Model 90 .22 hornet over .410 at an auction. Except for not having the box, I would say it is an honest 95% gun. I looked at the Blue Book of Gun Values and it states that there were only 500 combination guns produced. I was wondering if anyone knew how many of each caliber were made? I do know that the one i have is an L prefix serial number which puts date of manufacture at 1954. Any help would be greatly appreciated. Also if anyone would care to guess the value of such a firearm i would like to know your opinions. Thank you. Steve