Illinois Porcelain Signal Sizes are quite dramatic in size differences in this photo. I'm sure this isn't very common for such a dramatic size difference. Any one want to give me an answer if this makes the larger piece more collectible?..Too bad for the damage though. I've seen quite a few of the smaller variety, but nothing like the larger piece.

The dome is huge and the base is much longer. The wire groove is the same dia. though.

The base dia. is a good 3/8" dia. larger and the height is also about 1" higher on the larger piece.