
Current Collection
About Us
Welcome to Mastro’s Vault: Engineered for Collectors.
We are a father-and-son team bringing two generations of passion to the hobby. Our story started in 1968 and repeated in 2005, with both of us catching the collecting bug at exactly age 8.
By day, we are Biomedical Engineers. By night, we are dedicated numismatists and card investors. We apply the same precision and attention to detail from our professional lives to our collection. Whether you are hunting for a graded vintage coin or a modern rookie card, you can expect honest grading, secure shipping, and professional integrity.
From our personal vault to yours, welcome to the family.
(P.S. We are die-hard Red Sox fans, but we promise to ship safely to New York, too!)


Coins
With summer on the way, we’ve created jumpsuits, dresses, and shorts, ready for warm weather.


Cards
Dress down but don’t compromise on style. Our summer looks for men let you keep your cool in the heat.
"Time is the coin of your life. It is the only coin you have, and only you can determine how it will be spent."
- Carl Sandburg
