Dodge 15-cwt or 3-ton swb?

[David_Hayward (RIP)]

If necessary I can scan the pic but a query has arisen as to whether the Tippers on P. 26 of the Diamond T 980/981 book photd in Liverpool bearing census numbers L 6206992 etc. to S/M 6351 are T222 D15 trucks or as per the census listing D60S T-110-L units. The photo shows that they have round cab hatches. I have no idea how you tell the D60S apart from the D15!!