Continuation of BigLobe Plarail Museum

never released separately.

Sorry, there is actually a single item. It contained 4 tall girders, 2 short girders and maybe 2 or 4 adaptors. The bag header is from 1975 to 1980, so it seems that the orange girders with holes family were either reprinted after the D-51 set version became out of print or the set had a longer sales span until 1975. Could the 2nd opinion.
It is really hard to find information these days.