Post them bad boys if you want. Maybe someone will recognize.
No russian ink stamps. Some of the photos have paper manufacture marks or a brief notation if I'm lucky. Some are competely blank. Once in a while I will run across a photo with a german ink stamp on the reverse but these seem to be few and far between.
Some russian and other nationality archive photographs I have seen are inked stamped and most press photo's will have this in general.JMO
Here's a couple links, (the first by Robert Noss who I think is very knowledgable on the suject) I have found helpful although not specifically regarding ink stamps:
