1920's Sea going US Marine Officer snap shot 2" X3"

Nice snap shot of a 1920's US Marine Corps Officer wearing summer khakis. Taken on board an unknown Navy ship. I am guessing this may be late 1920's early 1930's "China Marine" era photo. Tried to get a close up of the hat badge & collar insignia.
Another internet find. Great addition to the collection, as USMC items are hard to find....