Per another topic, I was looking through my 1972 pennies and reading about the hub doubling. Does the pictures below show it accurately???
Compared with Wexler WMDO-001 for 1972 Philly...I see at least 5 matchpoints from his listing to your posted pictures...sweet find, my friend!...Spark
This is a good date to learn what to look for as well as how common this doubling occurred (all three mints for most of the year). You are more likely to find master hub doubled coins than not. On early die state MS examples, it’s even trickier. But beware of what you have especially since the working die doubling (at least 8 significant attributions) worth decent to great money.
I dont think I ever scrolled all the way to the bottom of a DDO page on Wexlers...thats where the info is hidden away lol. Master Doubled Die...it even sounds cool to say it! I have about 15 of these 1972 exactly alike. There are millions of these but fun anyway. I love this part of the description.... There are individuals out there trying to sell specimens of this doubled master die for premiums far in excess of what they should be. You should not be paying more than the normal numismatic value of a 1972 cent for 1972 cents with this master die doubling. Those trying to sell them to unsuspecting buyers advertise them as “genuine doubled dies” which they are. The ads are truthful in that respect, but they fail to tell you that it is a specimen of the doubled master die that can easily be found without paying a premium for it.
The 72P Master Die Doubling is incredibly common. Good on you for doing your research and learning something. Much better than a lot of the people who post stuff here.