Hello I am new to coin collecting and have recently found a 1972 Kennedy half dollar that Appears to have a lot of doubling on the back. I have no clue if I should submit to PCGS as They talk about the double obverse but this one is on the reverse. . I would like opinions,. Here are a few images.
Machine Doubling happens after the strike, damages the coin most of the time in the same direction on all /some / or hit and miss. Not a doubled die, as a doubled die is formed on the die, thus the term doubled die. Machine Doubling can happen the same way on a doubled die as well. The MD doubled dies, are one not preferred to a variety collector. (I advoid them like the plague) Pass on them it MD is present on a coin I'm thinking about buying. If a coin is graded, the Machine Doubling doesn't affect the grade. But I would never buy a doubled die with MD on them.