The group photo has three more 1923 issues. The 50 heller coat of arms is from Austria (#155, year 1916). So is the large brown stamp, which appears to be some kind of tax revenue stamp (not postage).

Here's another issue I've had purchasing another high dollar bank note stamp, sold to me as an original gum #155. I purchased the stamp linked below which I sent to a very reputable stamp dealer frie

1975 #1553-1580: 26 stamps @ $0.10, 1 @ $0.08, 1 @ $0.18 = $2.86

1975 #1553-1580