|
3 7/8" X 3 7/8" (99mm X 99mm)
(skirt ink stamp) BULGARIA 1973
Picture courtesy Bob Berry |
U-2121: Bulgaria
|
3 7/8" X 3 7/8" (99mm X 99mm)
(skirt ink stamp) BULGARIA 1973
Picture courtesy Bob Berry |
U number assignment from Worldwide Porcelain Insulators by Marilyn Albers & Jack Tod.
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