Browning has quite good sn data on their website under customer service.
You will have to call Browning with the serial number.
Call Browning or check the serial number on their website if it is up.
You will have to call Browning
Get the serial number off it and go to Browning's website.
1970
The prefix of 4T indicates that you have a Browning auto rifle in 22 long rifle that was made in the year 1964.
Long
15-2500 USD depending on exactly what you have.
50- 500 usd
your browning 22 was made in 1963.
Need to know the exact model to answer.
The W818878 is not recognized. 70B30095 is a number for a Browning Lever action .22 rifle. Use the link to find value