My five original rims are 6Jx14H2 manufactured by Sudrad in 1/69 as per photograph below. I recently bought a used 6Jx14H rim manufactured by KPZ for a use as a spare. The KPZ rim is stamped with the same part number (108 400 00 02) and was manufactured in 7/70. I could not find KPZ rims mentioned in our technical manual nor did they turn up in a forum search. I assume the origin of the KPZ rim must have been another MB model of the period, possibly a W108 or W109.
Were KPZ rims ever supplied on the W113?