What is this symbol?

[Tyler Ramsey]

Does anyone know what this symbol on this marine corps uniform is? Thanks ALLOT!!!

[Tyler Ramsey]

.

[JBFloyd]

The "E" represents excellence in gunnery (the hash mark below it representing a second award) and was worn by Marines in ship's detachments.

My impression was that it was worn on the lower left sleeve.

[VerKuilen Ager]

Right cuff placement was correct.

[Tyler Ramsey]

Thanks ALLOT!!! Ive had this uniform for years and, couldnt figure out what it ment. Thanks Allot!!!
Do ya'll have any like this?