Here ya go!

3B = 3200 1/2 ton Long Bed (123" wheel base)
57 = year
B = Baltimore Plant
109239 = unit number starting with 100001, making it the 9,239th unit built in Baltimore

Mike B smile

Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD