Yes the .380 Pony.
Yes Iver Johnson did make 410 shot guns, I own 2 break open 410 shot guns both made by Iver Johnson.
Actually, it was Johnson and Bye, the fore-runner of the Iver Johnson companies, 1871-1883.
They do not make a nine shot pistol made by Iver Johnson. These pistols were available in the 1940s.
Yes they did make them, around 1930. I own two Iver Johnson SS shotguns with raised ribs, a 410 & a 12ga.
You need to be more specific ie model caliber and all marks as has been said in previous questions and answers. To help identify the model try going to Google and entering Iver Johnson You will find several FAQ pages and they will help you in making an model id a previous answer said there were a million 38s made between 1897 and 1908 so all the info you can provide will make the answer more accurate Another source of information on this firearm (and most other Iver Johnson firearms) is the book by W.E. Goforth titled, "Iver-Johnson Arms & Cycle Works Firearms 1871-1993".
They did make .270 barrels for conversions of other firearms, but I'm unable to find any references to them ever manufacturing a bolt action .270.
The value of a firearm is based on the exact make, model and condition. You gave us one of the 3 criteria we need, and we DO need all 3. Iver Johnson firearms are typically relatively low value. A specimen in fair condition may be worth $75-$100. Without more information, we cannot give you an accurate estimation- sorry.
Iver Johnson 9mm magazine awnserit takes the Iver Johnson 9mm model magazine (its a very specific mag) but you can find them at numerich (e-gunparts.com) just search for the make, model, then part. but just so you know for a 20rd mag it will cost you about 50 dollars plus shipping
The Iver Johnson "Champion" is the most common version, although there are older models. Would need more information to make a valid identification. Assuming good shape, about $100.
I can find no '65A' but they did make a 55A, eight shot revolver from 1961-1978. Value of the 55A, depending on condition, would be $95-$225. Later models had 'Iver Johnson Sportsman' on it.
According to the guide I use, IJ Made a "Special Trap Single Shot Hammer Shotgun" and a "Super Trap Hammerless Double". Both discontinued in 1942.
An Iver Jonson WHAT??? They made rifles, handguns and shotguns. A serial number alone tells us nothing. We need make, model and condition.