Would you like to hold a facsimile of a die hub in your hand? You'll need two items: 1. Playdough 2. A quarter (not a collectible, but one from your change). Place the quarter face up on a table. Press the playdough over the coin. Slowly separate the coin and the playdough. Look at the indentation of the coin in the playdough. That's what a quarter obverse hub die looks like. The image is a mirror image of the quarter. Try it with the tails side up and with other coins. Let me know how it worked out for you, Clinker