[Buckeye30]

The LUSAC still has it's Signal Corps serial S.C. 42149 but incomplete rudder designators; but 40015 was marked A.S. then S.C. (McCook number P53). P54 was S.C. 42138. The service letters were not always changed. S.C. should have changed to A.S. on 24 May 1918.

P53 was fully marked on rudder later as........


USA
C.II
S.C.
40015
P
53



Nick