Yes, that is a correct cylinder head casting number for a 1955-57
Chevy 235 cu.in. engine. I currently have two. The engine casting number also covers the range of 1955-57 235 cu. in. engines. Best I can tell you if the current owner won't pull the cylinder head for a look inside is to hear it run. It should sound strong and rev up easily if all adjustments are current. Best of luck.
