Hello Jörg,
the L 246 is the chassis version of the L 247. Unfortunately hundreds of the L 246 chassis were sold at the ramp sale when Lenco closed down in 1979.
Many of the buyers also bought the plint's where the L 246 would fit in and sold them later as they were - without changing the tag with the correct model number.
Have a look here:
https://www.resus.ch/lenco-l-247.htmlKind regards
Max