Old car price guide shows #5 cond. $2760 #4 $4600 #3 $10350 #2$16100. On a scale of 1-6. The guy that wrote the book doesn,t buy them though. The way I tell a 55-1 from a 54 is it has an open drive shaft. The way you discribe it it probably is #4 cond.
Edit. Had a mistake on #3. Correction made. I,m sorry for any confusion.