VINTAGE 

P & E VINTAGE SLIDE RULER MODEL # 500 COPYRIGHT 1948 WITH LEATHER CASE

96947 ON OUTSIDE OF CASE

B-24D.E.G.H. & J PB4Y-1 ON FLAP OF CASE

CANNOT MAKE OUT WHAT WAS WRITTEN ON THE FRONT OF CASE

*SEE PICS*

CONTRACT - W30.053AC503

MID BY COX & STEVENS AIRCRAFT CORPORATION 

(PRINTED INSIDE THE CASE)

ORTHO-PHASE LOGLOG

P& E TRADEMARK

COPYRIGHT 1948

*LIGHT SCRATCH ON ONE SIDE OF THE RULER **SEE PICS CLOSELY**