I asked on RnS for a rough value for these, and within 2 days had 35 PM's asking to buy them. I've decided to ebay them, plenty of 70s cars on here that they would be the finishing touch on.
cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=271053281499
cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=271053281499