I have both a model 105 and 106 G&B pump. Neither pump has an enclosed clockface mechanism like the one shown in my above photos. The 105, which has a cast iron top with integral light shade, uses a 3/4 rod which allows the mechanism to fit the opening in the space between the front and rear sheet metal. Several earlier Erie pumps used this same set up. The 106 clockface is a little more modern in that there is a casting separating the front and back face. I realize that there are more variations than I will probably ever see so I can only go what what I have.
It should also be noted that the mechanism pictured has several rods that run between the two face plat, as can be seen through the opening in the side, much like the earlier cash recorder mechanisms. It may be possible that the pictured mechanism is for a 105, as this was G&B's first clockface pump, and the unit in my 105 contains a more modern mechanism.
Still a mystery to me. .
