If it was a military vehicle there should have been a data plate on the dash or possibly on the glove box. It may have been removed and the holes filled. You might look for indicators of filler on the back side of the dash. The military assigns their own serial numbers for local use. My 56 CA title does not list an engine number, in fact it doesn't list the number of cylinders which was common practice in that era.
Of course other states likely list data that they feel is important. As Tim indicates it should have had only one line of numbers/letters.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine