I have seen and found 3 different Holler maker marks, differing in the shape of the bulb and in the number of ticks or gradations on the thermometer itself.

The three are:

11 ticks
17 ticks
19 ticks

J

TM1.JPG (36.83 KB, 429 downloads)
TM 1.JPG (35.77 KB, 431 downloads)
TM 19 ticks.JPG (36.85 KB, 426 downloads)

Always looking for Eickhorns and etched bayonets.