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25hp
about 1993.but depends on horse power
horse power
Browning did not break down the serial numbers of the hi-power from 1945-1954.At the end of 1954 they had made 72,250 guns and then started to register there serial numbers with production in 1955.Your browning high-power falls into the production of guns from 1945-1954,I am sorry but that is the best that I can do.
Examine with high power magnification.
1981
T serial numbers yes, T Model, no.
The letters PM in the serial number sequence indicates that your Browning HI-Power handgun was made in the year 1980.
250hp
1975
Both the serial number, and the horse power rating are needed to determine the year model of a Mercury outboard.
All firearms were required to have serial numbers with the passage of the gun control act of 1968.This law became affective with the first day of the year 1969.