In honor of my Feature Post this week on Roman coins, I present to you a veritable treasure of links that you may find interesting!
 
http://www.anspocketchange.org/
The blog of the American Numismatic Society.  They’re looking to hire someone to digitize their collections, as an aside, if you’re looking for work.
http://numismatics.org/ocre/
The Online Coins of the Roman Empire project, a searchable database with currently over 22,000 coins from museums around the world.
http://numismatics.org/search/
MANTIS – an online database of the coins from the American Numismatic Society, including Greek, Roman, Byzantine, and Medieval era coins.
http://www.mfa.org/collections/featured-galleries/michael-c-ruettgers-gallery-ancient-coins 
Boston MFA’s newly designed Michael C. Ruettger’s Gallery now has an iOS app that shows you all the coins in the collection and allows high-resolution zooming!
http://www.romancoins.info/
A very thorough and detailed site with lots of examples and also Imperial sculpture organized by Emperor to compare with images on coins.
https://twitter.com/SarahEBond/status/407810680650092544/photo/1
I’m not sure of the ultimate source on this, but Sarah Bond provides great image to use with students to show what money meant to the average person.
http://www.the-romans.eu/diversen/Weights-and-measures.php
Scroll down to get a table of money values and an image showing examples of all the different kinds of denominations side-by-side.