I did a little searching and found this:

What does Marcas Registradas mean on a Smith Wesson 22 mag Model 53?

In: Smith and Wesson [Edit categories]
Answer:
Spanish for "registered trademarks". I was looking for the same answer.
Spanish for "registered trademarks". I was looking for the same answer.

Close but no cigar! It is latin not spanish and it translates to registered trademark. I know this because I live in Phoenixico Arizona and I know my spanish. Additionally, I don't think that the Smith and Wesson Company that was formed in 1852 in Norwich Connecticut and has had their plant located in Springfield Massachusettes since 1920 would have any reason to put a spanish roll mark on their guns.
Smith & Wesson wasn't that narrow minded.

In May, 1948, Smith & Wesson changed their simple "Made In USA" rollmark to a more complex four line bilingual version. This was to combat the many Spanish counterfeit revolvers being produced.

For collectors, the 4 line rollmark indicates a definite post war gun.

The "Made In USA" mark appeared in May, 1922. Prior to that date, there were no markings placed on that area of the frame by the factory.


Well, I did not write this, but after a bit of searching it seems to be correct.

Chief38