It's a tough time alright. My friend who was offered 10 for his mid eighties plus four tried to p/ex it with a well known Morgan dealer. The dealer couldn't offer him anything as his cars on the forecourt are commissioned sales so he'd have to buy in my friends car which he absolutely won't do. So, unsaleable and un part exchangeable too.
Rather depressed me as mine is a mid eighties car as well......
If you don't need the money best to hang till spring by which time my car will probably be worth 5 if this carries on. Luckily for me I'm not wanting to sell ( famous last words) and I don't care what the market does at all.