They call it the "Phantom" or "Weak" 4.. I always wanted to know why it's the number 4 in the date that the Grease Filled Strike occurs most of the time. There are quite of few of these on ebay ranging from $6.00 to a little over $100.00! Crazy
That's a cool coin. I quit staring at the photo because half of my brain saw the weakest 4 imaginable while the other half didn't.
I found this coin in a roll of steel that I bought over 15 years ago, when a spread them out this one just, jumped up and slapped me upside the head. I have been following those prices for over 15 years on E-BAY (crazy)
Well, it stands to reason that a grease fill has to originate somewhere other than the die, since they didn't grease dies. We can assume a Mint worker didn't put it there, and as often as greasers happen, it is plainly a routine action during the minting process which makes the grease available. Every once in a while they overgreased some part, and the next time the part moved it flung a blob of grease. They grease parts in the same place, the operation action doesn't change, and it's not unreasonable to think the same action might fling the same-size piece of grease to the same spot regularly. This being the obverse die complicates things just a bit, although I seem to recall that obverses weren't always hammer dies with Lincolns. And for that matter, if the problem seems confined to 1943 Wheaties, it could have been a single very solid fill on a single die. That could be as many as maybe a quarter million identical grease fills.
If I recall correctly the machine operator at the mint does not grease the presses it is done automatically you can see this clearly by viewing videos of the mint printing presses you will see that little circular hose that Carries Greece to the main function of the machine