Here is a Studebaker script. Looks different to me. The number plates on the mystery vehicle look European not American. The radiator and badge look similar though. This photo is of a late veteran not the truck in question which looks late 20's.
The Chrome script on the radiator was almost always an aftermarket bit of bling sold as an add-on by the dealer so although it was available for nearly every make (even Model T Ford) they are seldom seen so-equipped in period photos. Restorers love to dress their cars up with radiator script.
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So applying Lang's snippet of the nameplate being an extra, it's unlikely that unnecessary money would be spent on a work vehicle. The plot thickens.
There does seem to be more than a passing resemblance to late twenties Studebaker sedans, though.