I also collect a few coins, and am a member of the American Numismatic Association.
However, the field of coins is so extensive that specializing is quite necessary.
In addition to the safe deposit box, find a good dealer in your area and show him/her what you have. They can tell you if you have something worth grading and encapsulating; then they can submit your coins for grading for you.
Critical point: handle your coins very carefully! A single scratch on a coin can literally lower its value by hundreds of dollars (and even thousands). Even coins that look quite tarnished can bring a high return if handled carefully.
However, the field of coins is so extensive that specializing is quite necessary.
In addition to the safe deposit box, find a good dealer in your area and show him/her what you have. They can tell you if you have something worth grading and encapsulating; then they can submit your coins for grading for you.
Critical point: handle your coins very carefully! A single scratch on a coin can literally lower its value by hundreds of dollars (and even thousands). Even coins that look quite tarnished can bring a high return if handled carefully.