I thought that 2009 was a low mintage yr. I guess I was wrong and probably a “bit low on average” year.
The Fort it depicts is in Old San Juan. It is called El Morro. I took a picture in the turret the Quarter depicts
I'm sure there are plenty of mint errors for the 2009 Puerto Rico Quarter. Errors can occur on any coin. Here is something I can share from my collection -
Certainly low compared to other years, but not low enough to command a premium as far as I can tell. Still a rewarding find; I remember looking a long time for the 2009 State (Territory) Quarters...
Meow thinks the Mariana ones had lower mintages for territory quarters. And the Acadia ATB has the lowest in the recent times. Meow recalls a figure like 21,600.000 p mints, and 22,000 000 d mints. Meow Catsonally finds the El Yunque ones the hardest to find CRH.
John should buy a copy of A Guide Book of United States Coins also known as the redbook. Pricing guide isn't that accurate, but you can get an idea of a coin is rare. The great thing it's filled with all kinds of info. Mintages, weights, compositions and even basic grading info. There also historical info I would be willing to bet that almost every experienced collector of U.S. Coins on this site had one when the were newbies and many still use it as a reference today (I do). Best $10-15 you'll ever spend on the hobby