Floortrader,
I understand and respect a worldwide collector's approach. For some of the countries I collect, I'm a one-and-done collector.
I got pulled into the Soviet Occupied Germany (SBZ) rabbit hole by a collector-friend. For a while I was collecting SBZ by paper and gum type until the stamps I was missing got pretty pricey. Who wants to look at pages of the same stamp? Oh... it's the gum type or paper that is different.

It makes Washington-Franklin issues look varied.

The only point I was trying to make is that the visual identification cues we normally use to determine if a stamp is authentic or a forgery don't work well with the SBZ overprints..
Even the SBZ specialists I know shy away from the black hole of trying to authenticate all of the overprints. I suppose there are some brave souls who venture in.... I got a complete set of "Sommerfeld" overprints because it is basically my last name. I declared victory and moved on.
Dan
