Remember how someone here was saying the R51 Realart FRANKENSTEIN one-sheet was "over-priced" at $6,000+, and I explained that it is more rare than the 1931 regular one-sheet, and that many Realart lobbies are beyond rare, likely because they were shown at far fewer theaters?
The Realart Frankenstein one-sheet is not
More rare than the 1931 one-sheet. Sorry, there are quite a few more than six copies known of the Realart one-sheet.
BUT...
The House of Dracula Realart set is extremely tough, and contains two of the very best Frankenstein images (easily the best Glenn Strange ones), the other being this great card you auctioned last year:
There are MANY collectors looking to add this card to their set. I would think that you could sell 3 or 4 more of each of those two cards and they would still sell in the $1000 range.
The Realart set for Frankenstein Meets the Wolf man also has what I feel is one of the very best Universal horror cards period and the only card in the entire series (Universal or Realart) to feature photos of two monsters on the same card. The next time you sell one of these my guess is would easily double the price of the House of Dracula card you just sold.