At coin shows I like to go through "junk box" coins where one can pick unattributed coins for low prices. I made a junkbox on the web; http://augustuscoins.com/junkbox.html To keep shipping low I am only sending coins to US addresses. The junkbox has late Roman AE, some Byzantine, a few lousy Greek AEs, but where else can you find legible coins for $5? (The Claudius sestertius is terrible, but only$6 for your "Twelve Caesars" collection).