There is nothing that makes a true retro renovator happier, than finding the perfect toilet.
I have a 50s house, so I must have a 2-piecer. And today, there is nothing new that really fits that old groove so my recommendation is basically, something innocuous.
However, if you have 60s home with a more defined modern style, you can go with a 1-piece elongated toilet like this Champion Elongated from American Standard. I particularly would like to see this suite — including the toilet, tub and sink — in gray. Or: Match it to the sinks in today’s ebay pick.
And remember: Painted wood seat, chrome attachment hardware.