It can be part of the sn, it can mean experimental, it can mean duplicate.
Production date is 1977 for serial numbers: 19201M-59999M. Don't know what the X is.
You need to know the make and model. If you can post THAT here, along with a serial number, we may be able to date your gun. There is no ONE reference source for this information, and there is no reference at all for some guns. If you are concerned about posting a serial number in public, X out the last 2 numbers.
This gun was made in 1952.
It means that it is a duplicate serial number
Uh, I don't know what your planing... and there might be a way to get around this but as far as I know, yes. at least that's what all the crime shows have taught me. they use x-ray cameras or something
Any two numbers can have only one arithmetic mean. If the numbers are x and y, then their arithmetic mean is (x + y)/2.
for belgian guns, the serial # that would start 76X xxxx "X" stands for Magnum 20ga. auto5man
If there are only k numbers x(1),x(2)....,x(k), the geometric mean is the kth root of the product of these k numbers. Example: find the geometric mean of 4,3,7,8 We want the fourth root of 4 x 3 x 7 x 8 = 672 =(672)^(1/4) = 5.09146 is the geometric mean. The geometric mean is normally defined only for a set of positive numbers.
You can only answer this question if you know how many numbers there were before. (If you know how many were there after, then subtracting two gives you the number before). So suppose there were n numbers with mean x. And you add two more numbers, a and b. That means the sum of the n numbers was n*x. Sum of the n+2 numbers is n*x + a + b So the new mean is (n*x + a + b)/(n + 2)
x = 22.75 The mean is 11.75
You cannot. Suppose the mean of a set of numbers is m. Now add the pair of numbers m-x and m+x to the set, where x is any number. The new, extended set will have the same mean as before but two more members.
1937-1963 500 FAIR, 800 GOOD 1650 V.G AND 2250 EXC. IF IT HAS AN X OR D A COLLECTOR PREMIUM OF 10% BECAUSE THE SERIAL NUMBERS WERE USED ONCE BEFORE. IF IT HAS THE BOX AND THE SERIAL NUMBERS MATCH AND 100%THE 30-06 WAS THE MOST COMMON. TO LOOK AT THE SERIAL NUMBERS THEY HAVE LISTED 1 TO 581471 AND ENDING IN 1964 I WOULD GUESS THE AGE TOBE ABOUT 1940. I GOT MY INFO FROMTHE BLUE BOOK GUN GUIDE. HOPE THIS HELPED