Model R-18 Serial Numbers
(Excluding Interpolated and pre 1970 entries)

Serial #ModelYear Built
52691R-181933
52692R-181933
52693R-181933
52694R-181933
52695R-181933
52696R-181933
52697R-181933
52698R-181933
52699R-181933
52700R-181933
52701R-181933
52702R-181933
53896R-181933
54286R-181933
54367R-181933
55157R-181934
55345R-181934
55553R-181934
56693R-181934
56694R-181934
56695R-181934
56696R-181934
56697R-181934
56698R-181934
56699R-181934
56700R-181934
56701R-181934
56702R-181934
56703R-181934
56704R-181934
56705R-181934
56706R-181934
56707R-181934
57103R-181934
57530R-181934
57786R-181934
58238R-181934
58385R-181934
58386R-181934
58387R-181934
58388R-181934
58389R-181934
58390R-181934
58391R-181934
58392R-181934
58393R-181934
58394R-181934
58395R-181934
58396R-181934
58397R-181934
58398R-181934
58399R-181934
58400R-181934
58401R-181934
58402R-181934
58403R-181934
58404R-181934
58405R-181934
58406R-181934
58539R-181934
63249R-181936
63844R-181936
65935R-181937
67430R-181937
68826R-181937
69507R-181938
70938R-181938
70939R-181938
70940R-181938
70941R-181938
70942R-181938
70943R-181938
70944R-181938
70945R-181938
70946R-181938
75071R-181940
81384R-181942
81962R-181942