Possible contact with raised devices from another coin on the shoulder. But nothing of strong interest on this one.
1. Note the motto devices are smaller than normal. The die had been through several polishing, reducing the fields, thus making all obverses shorter.
2. With the devices thinner, can't even tell if this is an example of master die doubling or not. (Which is worthless as 50% of the coins from that year from all three mints had this issue:
3. Here is a tip on searching the 1972 cents. Note the shape of the '9'. The the 10:00-11:00 curve on the 9 looks curved and circular, then it is a normal die example. But if the die is different on this area, look on the images below on the DDO
's that year:
Note the arrows. That will help you find doubled die obverses a lot faster.