I bought a nice "Birthday" tax disc for December 1966 from a guy on e bay. You get a fully printed disc and two spare blanks.
So you can wear the very first tax disc your car ever had ( if you don't have it) for £8(one) to £11 (three)
I'm nothing to do with the seller but have had his "retro" discs on my last two cars
See his website.
A very nice guy he sends them on approval first and you can pay via paypal after recipt
poplar.greg@tinyworld.co.uk
or here
http://www.ebay.co.uk/itm/REPRODUCTION-M...=item1e8b5aca7e