For sale is the NOS brake booster vacuum valve and tag pictured. However the valve will work for many years.
The instructions in the kit were dated June of 1970. I have not seen anyone who offers a CS tag and this is an NOS tag and valve.
The so called exact reproduction valves do not have these Factory markings. Would be a very unique piece for that point judged car. I have seen scam sellers listing repos as NOS so watch out.
The item "1970 70 1971 71 1972 1973 1974 CORVETTE TRANS AM CAMARO NOS NCRS BRAKE BOOSTER" is in sale since Friday, September 25, 2020. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Brakes". The seller is "ravjudge" and is located in Le Mars, Iowa. This item can be shipped to United States.