Possible Templar symbols can be found on panels 3, 5, but also 2. The most notable candidates are.
“In Hoc Signo” (‘in this sign’) is still motto of Templar Masonry. The cross is either a Templar or a Maltese cross, which would both suggest Templar Masonry.
Then we have perhaps a less obvious one, but I have to point to the fact that both triangles of this hourglass, have 12 candles, just like the popular image in contemporary Templar Masonry. The candles (nowadays) refer to the 12 apostles.