You may have an earlier hood. 47 & 48's only had the Chevrolet/Thriftmaster emblem on both sides of the hood. 49 & 50's had the series number below the Chevrolet, 51 & 52 had just the Chevrolet emblem, 53 & 54 had just the series number. 55 first series got a combined badge with series number on top of Chevrolet. You can see the differences here.
If yours is truly a 49, you can drill the mounting holes for the series number emblems.

Kevin
1951 Chevy 3100 work truck
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Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.