I have a vintage 1974 set of 535 Unifix Cubes, N42-12 made by Philograph Publications in England. They are used but still in very good condition. I combine shipping for multiple purchases. Any questions email me. If for any reason you are not satisfied with your purchase PLEASE contact me before leaving negative feedback and I will make it right. 
Please note that all of my items are bought at auctions and I don't know the people and their habits so if you are sensitive to smoke please do not buy.