That would depend on whether it is a shotgun, rifle, or handgun. Also on who made it.
Before we can put a value on it, we need to know what it is. Your question is like asking "How much is a car worth with 79212 on the license tag." Matching serial numbers are only important on a collectable firearm. Hunters don't care what the serial numbers on their guns are and few modern firearms have the serial number in more than one place.
No way to tell. The serial number does not tell make, model, and condition.
go to: gunsamerica.com check out the gun condition and price asked on lugers. compare it to yours for price
Sorry, but you probably cannot. Most serial numbers alone do not convey much information, and despite belief to the contrary, a serial number is NOT unique to only one gun in the world (or serial numbers would run into the billions)
Low serial numbers can increase a firearm's value if they are very low, but somtimes things change during the production of firearms and higher serial numbers might be worth more. It really depends on the make and model of the firearm.
50-100 USD
Gun shop, gun shows, internedt auction sites
No way to answer. Serial numbers are NOT unique to only one gun in the world.
A gun with that serial number. That's as much of an answer as can be given with the information provided. Serial numbers are not unique to one firearm, and may not even be unique to one firearm in a single manufacturer's lineup.
Depends on the serial number and what you mean by "automatic". Most will be worth around $700-$800, low serial numbers (under 8000) will bring in a couple hundred more.
Blue Book of Gun Values will have the numbers.