"Snbstance", but the font makes it very hard to tell. The "u" was put into the... stamp? upside down, but the way the lines are weighted that's very hard to tell
under copyright to the John Springer Collection. John Springer was a Hollywood publicist who had an extensive collection of entertainment photos. The linked
and revenue stamp for additional social tax (1917), overpirnt on 1913 occupation revenue stamp (20 lepta on 20 lepta). The specific stamp on this image