Most of these cars have "LIONEL LINES" rubber-stamped on the sides in serif lettering.
There are three variations:
Variation A: Has three blackened pressed metal pipes that show lengthwise markings on the inside of the pipes. Reproductions of these pipes exist, but they are machined and do not have these interior markings. 1946 production
Variation B: Has three 5/8 inch diameter by 7 inch long logs for a load. These logs have not been stained. 1947-48 production.
Variation C: Is identical to Variation B except sans-serif lettering is rubber-stamped on the sides.