- The Ancient Coin Collectors Guild (ACCG)
- The International Association of Professional Numismatists (IAPN)
- The Professional Numismatists Guild (PNG)
Needless to say, nothing is posted on the IAPN or PNG websites.
Red-figured calyx-krater fragment attributed to the Kleophrades painter. Michael C. Carlos Museum inv. 2006.051.011B I have noted that Dietr...