what you have described is entirely possilbe. Take it to a gun show to find out.
Proofhouse.com
7 letters and numbers on a modern revolver. Older guns could have fewer characters. The serial is usually stamped on the frame ahead of the cylinder, under the yolk when you open the cylinder. Any other numbers would usually be markings placed by the end user (military unit identification, police identification and such).
Firing order is 1-2-3-4-5-6. You migth be able to check cylinder numbers by looking at the distributor markings.
no they don't
First, you'd need to know what type of rifle it is. There's plenty of resources available online which can identify markings and such, but they tend to be oriented towards one particular type of rifle.
NumbersNumbers
Ull and serial numbers
if there are no barrel markings......how do you know it's a colt ??
it is an 8 cylinder
a 4.0 is a six cylinder engine
What is it (rifle, shotgun, handgun) and who made it? What are the markings/words on it?
Impossible to answer without a detailed description of all markings.