At least they were OEM for the prototipo. It had even the sidewall texts painted yellow to highlight it. The spare in my 1975 champ is a WXW too.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.