ASF A-3 50 ton truck, converted to early cylindrical roller bearings with front covers.  As far as we know, these trucks were unique to some C&O 40′ PS-1 plug door boxcars numbered in the upper 7700 range.  A prototype photo can be seen in the Morning Sun Chesapeake & Ohio Color Guide.  HO scale.

Package contents: (1) pair of ready-to-run trucks with semi-scale (code 88) nickel silver wheelsets and brake detail.