http://www.ithacagun.com/model51schematic.html
Send me your email & I'll send you a scan of the Ithaca model 51 exploded view & bolt buffer.
An Ithaca model 51 magnum 3 inch shotgun is worth $275-$325, depending on condition.
If the Model 51 is in very good condition it should bring $250 - $300.
Best to let a gunsmith do it.
Technically they are both "Featherweight", but the Deerslayer had a shorter barrel with rifle sights for shooting slugs or buckshot. It could also be fitted with a scope.
just soppose to pull out
nothing
You have an Ithaca Flues model made in 1915
Well, first of all the serial number given is for a model 37 and not the model 51. All model 51s serial number begin with 5100. Since your begins with 37 would you not believe that it is a model 37. Your model 37 was mfg circa 1975.
your 1911 was made by Ithaca in 1943
Ithaca produced this model between 1958 and 1964.
Since the current Ithaca company does not have those records we can only guess at the date. I do have these facts and you can see where your shotgun fits. Serial number 510040xxx was made circa 1973 as it is a 20ga and they were not mfg until then. Then 510080xxx was made circa 1975, and 5100103xxx was mfg circa 1977. So you 510061631 was made circa 1974. Best I can do. Remember this is only a guess based on actual purchase dates of the three Ithaca shotgun mentioned. nge of ownership at Ithaca, and published records are incomplete. They began making the Model 51 in 1970. You might try emailing Ithaca Gun Company to see if they can provide a date of manufacture.