I just purchased a '72 Jazz bass. It's all origianl except the chrome pickup cover is missing. I've found a vintage 70's replacemnet cover for $70.00. My question is, how much does the absence/presence of the original cover detract/add to the value of the bass? I know there's no cut and dry answer. I'm just looking for some opinions from people who are hopefully a little more savvy on these matters than myself.