Model 000-18 Serial Numbers for 1931
(Excluding Interpolated and pre 1970 entries)

Serial #ModelYear Built
47981000-181931
47982000-181931
47983000-181931
47984000-181931
47985000-181931
47986000-181931
47987000-181931
47988000-181931
47989000-181931
47990000-181931
47991000-181931
47992000-181931
48194000-181931
48195000-181931
48196000-181931
48197000-181931
48198000-181931
48517000-181931
48672000-181931