There were actually two different types of tubes that were used on 1969 production Camaros. The left isde used a "pinched end" style or "capped end style". Both are technically correct. The right side also had a first and second design........a "tapered end" style and "capped end" style. Both are correct and what you have photographed here look to be one of the correct versions used in 1969. Plating finish should be black zinc.
There is more about these tubes in detail in our 1969 Camaro fact book on page 131.
Happy New Year,