Actually, on the side of the hood on 49 ADs there should be two emblems, the word Chevrolet (with no Thriftmaster) and then the series number (3800 in your case) below that. Here's a link to a page on my website on AD emblems .
HTH
Jeff Nelson
"Beer is proof that God loves us and wants us to be happy." - Benjamin Franklin "Always do right. This will gratify some people and astonish the rest." - Mark Twain
