The serial number on the 38 is S8508x. The number on the K22 is K6121x
Are you sure that S8508x is correct, and the gun is marked on the barrel as ".38 S&W Special CTG"? If so, what you have is likely to be an N-frame .38/44 Heavy Duty (if it has fixed sights) or .38/44 Outdoorsman (if it has adjustable sights) which would have shipped around 1952. Does it look anything like this one (which is about the same age)? What is the barrel length?
If so, and if in high condition, it would be quite desirable.
The K-22 Masterpiece would be from about 1949, and could also be quite desirable if you still had it, or find it.
Please post some pictures of the .38 if available