Supe,
I'm no expert, but:
Looks like a "Line" Lieutenant Commander in the Merchant Marine given the sleeve embroidery.
Look top row, left most device; seems to match his sleeve.

Small world! My mom and dad grew up around Trenton. Mom's from Pennington and Dad was from acoss the river in Newtown, Pennsylvania. Mom's 5 brother's went to war from that area, along with my dad of course.
I spent a little time in Pennington while we were stationed at McGuire. Nice area.