Here's another one I found:

Item# 270015764677 - seller says it's from a 1972 Penton 125cc Six-Day ENDURO, Frame# 20957473, Sachs# 7176349
Were all bikes set up the same from the factory, with enduro "kits" being sold separately or dealer-installed, or were different versions factory-produced?
Brad Webster
Houston, TX
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assorted aftermarket parts, with a front end, wheels, and Berki motor from a steel tanker, all stitched together in a '72 CMF frame, then buried alive for a quarter of a century... can it live again?
Item# 270015764677 - seller says it's from a 1972 Penton 125cc Six-Day ENDURO, Frame# 20957473, Sachs# 7176349
Were all bikes set up the same from the factory, with enduro "kits" being sold separately or dealer-installed, or were different versions factory-produced?
Brad Webster
Houston, TX
------------
assorted aftermarket parts, with a front end, wheels, and Berki motor from a steel tanker, all stitched together in a '72 CMF frame, then buried alive for a quarter of a century... can it live again?