These appear to be dataplates from VINS between 33304 and 44964. (http://www.cj-2a.com/oldsite/marks/dataplates/survey/index.html) Curiously, the VIN area looks scratched out.
“ORIGINAL SET OF DATA PLATES FROM 1946 JEEP CJ2A FLAT FENDER. THESE ARE IN OK SHAPE BUT ARE THE ORIGINAL SET. $50 BEST OFFER OF TRADE”
http://portland.craigslist.org/clk/pts/2794637771.html