I prep myself before I go to a shop or a show, by studying the overdates listed in Krause. It's really hard to go through bulk because they're not sorted by date, and most overdates are before 1920. That way I narrow down where to look. For example, most Canada & Australia overdates are rare, but other countries are easier to spot such as Mexico, Sweden, Belgium, and Peru.
Edited by DVCollector
09/14/2009 10:45 pm