The serial number K 533800 indicates that your Smith and Wesson was made in the year 1963.This was assigned to the models 14,15,16,17,18,19,48,53,66,67,68 and there pre model variations.
1980
No serial number provided.
No serial number provided.
No serial number = no way to answer.
Need the serial number
No serial number provided.
K 7981 smith&wesson
You will need to add the model of Smith and Wesson to your serial number to get the correct year of manufacture.
1978
y
THA7110
@1971