Sorry, you apparently didn't get the humor. I came across your project and was surprised to see someone else want a copper top bar.
It was part of my design all along and many people gave me funny looks.
The material is all the same (panels and bar top.) There is also built in storage benches with the same pattern as the front of the bar in a different spot in the basement.
Commercial bronze is 90% copper, and 10% zinc (alloy 220). The color is between orange copper and yellow brass. It's use is primarily decorative. It is tougher than pure copper with wear and tear. These were pictures during construction that I happened to have at work and accessible. They do appear to be different material, but it is exactly the same, from the same heat number. The top was a 36" x 120" sheet, so it is one solid piece, no seams anywhere.
The reason for the panels was to tie it in to the storage benches. What is not seen is the 2"od tube foot rail that sits below the panels. It is also alloy 220 bronze.