Here is what Gobl says about the symbol on the
obverse of these two coins (page 15). "... the
wreath as investiture
symbols ('fravahr' symbol) on the globe. I have also found this symbol in the upper left
field." This was for Sapur I coins and others, especially Sapur II. He seems to believe that many of these are investiture marks and others are related to the adoration of Anahit.
As for
mint marks, Gobl states they may have started under Varhran I, on a gold dinar with the Pahlavi letter "h", but it is doubtful. The really readable and clear
mint marks begin with Hormizd II with the
mint name abbrevation of Ray on the
altar pillar.
Gobl really does not discuss the symbol on the
altar pillar, but he does discuss
symbols in the fields and says they may appear on the
altar shaft. These are the
wreath of investiture symbol and the tarus symbol (bull's
head). The symbol on the shaft of the coin in this
thread could be a combination of these two
symbols.