The class was divided into three sub-classes depending on the type of tender fitted.

J39/1 Standard LNER 3500 gallon tender.

J39/2 Standard LNER 4200 gallon tender.

J39/3 Various former North Eastern Railway tenders 3940-4125 gallons.
The class was divided into three sub-classes depending on the type of tender fitted.
J39/1 Standard LNER 3500 gallon tender.
J39/2 Standard LNER 4200 gallon tender.
J39/3 Various former North Eastern Railway tenders 3940-4125 gallons.
LNER Class J39