Sending photos of my charles daly 22lr field grade and magazine to Armscor in NV . They used to be KBI also located in the Philippines. Will post response with good news, hopefully.
I am guessing in the 1970's.
This gun would be a fake as there were no Bankers Specials manufactured in .22lr after 1934.
Best left to a gunsmith
1957
1958
@ 1967
No published sn data
Your Smith was manaufactured in 1958.
per proofhouse.com,around 1959
I have it as the 15 round magazine that fits my model 700 .22lr rifle I bought from Big 5.
$160-$250, depending heavily on condition. Manufactured from 1922-1935
No such model offered for commercial sale.