HEIGHT = 8 3/4 inches
BASE = 4 inches (square)
WEIGHT = 3+ lbs.
VALUE = $100 - $150

Marking :
PENNSYLVANIA STATE POLICE (on front of Base)
UC   E(on the inside of Base)

Note 1:
The shape of this piece does not have the characteristics of a true doorstop. It was probably made for a select interest group, the Pennsyvania state police. Another oberservation is the markings looks like modern style lettering.

Note 2:
This piece is shown for reference solely because: it is shown in John Smith's Doorstop Book with a stated value $500-700.

Note 3:
One sold July, 2017 on Ebay for $137, not a premium doorstop price.