The digital database at Uni Heidelberg is absolutely amazing - I use it a lot. They have a lot of old
auction catalogs with many high
quality plates. You need to enter the name of the
auction house and try a few variations to find them, e.g. Bruder Egger or Gebrüder Egger.
Other words you can use are (note the Umlaut on the u)
Münzen (coins)
Medaillen (medals, another word they used to use for coins)
Münzsammlung (coin
collection)
I can spend hours rooting through the lists I find !
