Gunsmithed close to 40 yrs and finally saw one, a Mossberg 340TR, a smooth bore .22 with a screw-in rifled tube in the muzzle. Probouably early '50's manufacture. Mag is missing but I think I'm on the trail of one. Just out of curiosity, anybody got an idea what one of these is worth in about 75% condition? Thinking I might try to buy it if customer is willing. GW