These valve covers came from a very original 71 383 but I am not sure these are a matched set. All of the clips appear to be intact on the red VC and the orange VC doesn't have any clips and there is no evidence that it ever had any. I am not going to use these and I wanted to pass these along to someone that can but I want to make sure I represent them correctly. What is a fair value for these valve covers? Thanks for the help.