Used Wittek #92 clamp. Originally was Zinc Dichromate plated. This used clamp was used for attaching the air inlet filter assembly to the inlet bracket. 1966-67 Ford and Mercury cars and light trucks with Thermactor smog systems. Typically found on California sold vehicles. There is also a Wittek 88 clamp, which is slightly smaller.
Wittek manufactured their part number is 92 and it is stamped as such. The Ford part number may be 97289-S. This information was found in the 1967 Engine Assembly Manual.