Catawbacock, if you are removing yours and want to sell them I don't know how you would be able to remove the windshield without destroying the seal. I wouldn't pay anything for a '67 seal or windshield or use them. I removed my '66 last year and you could barely see though it when the sun hit it at just the right angle.
Dave, a genuine MB window seal is now around $300, aftermarket you can get for less than $100, but I wouldn't use one as they don't fit properly. New windshield from MB is around $800.