It would be worth between $65 - $75
The value of that gun would be about anywhere from 150 to 200.
I would use a 22 long caliber rifle, a Kember,Browning for the pistol I would use a 9mm or 22 long rifle pistol a Kimber, or Sig Sauer.
The value of an Iver Johnson Magnum 22 caliber revolver would be dependent upon a number of factors. Some of these factors would be the age and condition.
No more than 50 USD, and for that it would have to be NIB.
JP Sauer made some very fine guns, and it would be impossible to accurate evaluate without seeing it. Could be into the thousands.
The exact value of a 1910 Colt 22 caliber mini handgun would actually be highly dependent on a number of factors. Most importantly, the condition of the handgun.
1972 is the date of manufacture. The value would depend on the caliber of the rifle and condition.
50 or so; no published sn data.
One would think that .380 ACP and .38 Special would be the same size--namely 38-hundredths of an inch. But there can be some flexibility in stated caliber and actual caliber. Long story short, .380 ACP is the same diameter as a 9mm, roughly .355 caliber. .38 Special is basically .357 caliber.
300
Undoubtedly, currently the most popular handgun in America is the Glock 17 which fires the 9MM Luger cartridge. Rapidly catching up however are the 40 caliber handguns offered by Glock. In close second would be 9MM and 40 caliber models from: - Sig Sauer - H & K - Beretta - Taurus - Ruger