michael080
Western Thunderer
Hi,Your green van and the real one in the picture are both of a German type. The one in the picture is a later version with various detail differences, principally the extra bracing at the ends. Many thousands of these vans were built by German industry, for railways both at home and all over Europe and from the 1890's until larger designs came along in the 1910's . Many were then requisitioned after both World Wars by the Allied countries and the East European block . Your van is quite plausible as an SNCB vehicle .
This is a G10 wagon. 121000 were built from 1910 to 1927. This has been to most common covered wagon until the 1950s. There is some information at wikipedia about "Verbandbauart" wagons. Verbandsbauart - Wikipedia This program is comparable to the RCH standardisation. They were spread all over Europe after WW2.
Michael