Used OEM Suzuki 1973-77 GT380 Right Side Cover 47211-34100 -157
ATTN: photo 2 shows this item has a crack where the mounting tab is almost broken off.
This will need repaired (glued) before attempting to mount.
Suzuki part #s have two groups of five digits separated by a hyphen and if it is a painted part another hyphen followed by three digits. These three digits are the code for color.
Suzuki often used the same color with different names and three digit codes so it is very difficult to be exact when determining the color. To make matters even more confusing these color names and numbers were only for the North American market and may be something different in Europe and Asia.
Bottom line is there is no way to be certain that this will match your tank or opposite side cover.