Richard,
What a great picture. Clark at the 1967 Zandvoort Dutch F1 Grand Prix.
As for the Talbot shown, my guess is that the mechanics just grabbed a set of them off another car in the shop. They’re certainly oxidized. Since this was the 1st GP for the Lotus 49 even those Talbots wouldn’t have had a chance to oxidize like that even in the Salt air of Zandvoort which was literally built on the Sandoons by the sea.
Excellent correction to the completely wrong Tamiya molding.
joel