As for the SN, on the front tow lug A342 is stamped, but overstamped with large Xs, and 042 is stamped above. I don’t know what this means, does anyone out there?
Alf,
The first batches of M60A3's made in Detroit had SN's stamped with A3 to indicate they were not A1's. So the serial number would be A3 SN42, then later they just stamped her 042. Funny thing was the nomenclature M60A3 wasn't officially recognized until MAR 79, and by then they were fielding A3's in Germany with 3AD. Below is an example of SN 012.
She's a pilot though, that's why you see A12, later she became A3 012. TACOM has her as 3012A, an Anniston rebuild but that's an error on the documents. Can you post a good picture of the lug?