I don't think I've ever seen an error quite like this one. I'm looking forward to everyone's opinion. Thanks in advance.
A little extra pieces of metal on that one. I see no signs of damage that would cause that. Nice find. Congratulations
To me it shows two die cracks tied together by a raised area in the forehead. If the cracks go over the rim, might be minor then I would call it a retained cud. Have you tried Cuds on coins Pennywise? https://cuds-on-coins.com/lincoln-cent-1950-1954-rcd/
Yes, it's an RCD and listed on COC as RCD-1c-1952-01 Lincoln Cent Retained & Pre-Cuds; 1950 -1954 – Cuds on Coins
Nice I am glad you found a match. 52' Lincolns are full of different die breaks, lots of BIE's they are fun to search. Yours definitely shows stronger die cracks than the example on Cuds on Coins.