I posted Lang’s photos on a forum and
www.conam.info replied it could be a Republic 1-1/2 ton truck from approx. 1927/1928.
The provincial licence number was issued on 23 March 1927 to
Wilhelmus Cornelis van den IJssel from the town
Berkel en Rodenrijs.
But the emblem doesn’t seem to match:
http://www.americanautoemblems.com/2...lic-truck.html