This is one of only two known Lincoln cents that were bonded with a magnetic screw. The other Lincoln cent was bonded to a much smaller magnetic screw.
This one weighs 2.5 grams giving the total bonded error a weight of 5.6 grams. It is in gem mint state condition and certified in a PCGS oversized holder. It is one of the most eye appealing U.S. mint error coins ever discovered.
Fred Weinberg discovered this unbelievable mint error in a group of San Francisco error coins that he purchased from a long time collection and determined that this 1967 Lincoln cent was struck in the San Francisco Mint. It is a very dramatic combination of a long magnetic screw being struck by cent dies and bonded into the obverse of this Lincoln cent.