[oletrucks] Question for GMC TF experts

["Hanlon, Bill (ISS Houston)" <Bill.Hanlon@hp.com>]

I believe that 55.2 and 56 GMC trucks had block letters GMC on the
tailgate.  

In 57 the tailgate letters were fancier.  The M had a little horizontal
"bar" off of the bottom of each leg that underlined the G and the C
similar to the GMC logos on the hood and front fenders.

Anyone out there know what years (55.2 through 66) used the block
letters and which had the fancy letters on the tailgate?

oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959