Topic: Original Air Conditioning - Suction Hoses

[krelboyne]

Sorting through our used A/C hoses I came upon these differences between 1967-68.
The hose with the brass ends has a part number of C7ZA-19867-C, the other hose has no markings that I can find.

Anyone know which came first and any cutoff dates? These would have come from 1967 Cougars (only built in Dearborn). and 1968 Cougars (built in both Dearborn and San Jose).