Front view, left side

Picture courtesy of Slesvigske Regiment on Foot Historical Collection

The Mk. V had a body of fibre glass. Fitted with mount for radio and machine-gun (MG 62). Mk. IV almost similar to Mk. V.
The Mk. III and IV versions were never adopted.
Official designation appears to have been "Kampvognsattrap, M/66" (Dummy Tank, M/66).