Billy,
An excellent example of a textbook PSS bayonet. Most certainly the missing letter was simply polished off by the armorer when the blade was re-shaped and polished prior to plating it. This is common on refurbished bayonets. Collectors should not lose sight of the fact that this bayonet started out life as a S98/05. You will also see the original Imperial markings deliberately removed on the spine of the blade on some of these PSS and you will see them left in place on other examples. It appears from the photographs that part of the original Imperial inspection mark is still on the back of the pommel above the lug catch.
Congratulations on an excellent, and absolutly original, example.
George
