This Dominion - 16 clear transformer comes from Prince Edward Island, Canada.
It has a number48 and <D> and under that is a number 4.
It does have a chip on it under the secind ringabove the word Dominion.
It came from a transformer on a telephone pole.
It is 4 inches tall and 2 1/2 inches in diameter.
Kept in a Smoke Free Home.
Very heavy pressed glass.