The Hemingray-54 A&B is an uncommon two piece transposition style insulator. The bottom piece was produced in three different heights; the middle height version is shown. This style also has the distinction of being the only "modern" Hemingray (produced after 1933) that comes in a true purple.
4" H x 4" W
Rarity Scale (1-10):
Fairly Common (4)
The bottom piece (54-B) comes in a variety of heights; this is one of, if not the, tallest version available.