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1971
The prefix of 4T indicates that you have a Browning auto rifle in 22 long rifle that was made in the year 1964.
50- 500 usd
your browning 22 was made in 1963.
Made in the U.S.A.
Your Browning BLR model rifle was made in the year 1969.
This is a Browning .22 auto rifle made in 1968.
You will have to call Browning with the serial number.
The suffix of M73 indicates that your Browning BAR semi-auto rifle was made in the year 1973.
The suffix of M71 was assigned to the Browning model BAR(Browning semi-auto rifle) which was made in the year 1971 in Belgium for Browning.
Browning.com has manuals you can request or download
YOu will have to call Browning to find out. It was made in 1978