50-50000 depending on EXACTLY what you have.
1851 Colt Navy revolver in .36 caliber
50-300 USD or so
Could range from 100-10000 or more USD
It would be in 36 caliber or 44 caliber...
Yes. The Navy model of 1851 was in .36 caliber.
It appears that this is a Colt New Model Pocket Pistol Of Navy Caliber. The engraving on the cylinder should say Stagecoach Holdup.
I assume you are asking about the Crosman model 36 Frontier. If this is the right pistol then please state the condition of the pistol to get an estimate of value. Is it in Poor, Fair, Good, Vary Good or Excellent condition?
Impossible to answer without more details
10-10000 USD depending on specifics.
9 millimeter is the caliber. IMPROVING ANSWER: A "9mm" bullet is actually .355 or .356 of an inch in diameter. So the caliber is about .36, but nobody calls it that because it would be confusing. Everybody calls it a 9mm and if somebody asks you what "caliber" that pistol is, you can answer "It's a 9mm" without having to add or explain anything. further improve: 9mm is the correct answer. you can find the caliber by measuring the diameter of the bullet. translate to millimeters or inches and that's the caliber. 9mm is a 9mm caliber not "around .36"
If it's a S&W; 100-300 or so
100-300 USD depending on condition.