I'm thinking this is a Siebert bicycle. Siebert was known for having a larger number of spokes than normal in the wheels of some of their tricycles. That style seat was also used on those same trikes. Plus, unless my eyes are playing tricks on me (which they might), I'd swear I see an upper case "S" on the head badge decal remains, with the maker name angling upward to the right of it just like on their tricycles. I'm wildly guessing around a 1950 model give or take a couple years since I'm not that familiar with Siebert bikes.
Dave