The one on the left is a 1973 Century. On the right, Jonas, you say a mid 60s Century with copper base. I attempted to filter the one on the left and got it super clear, but now the wax is sticking to the sides of the globe (it didn't before). I am NOT ever touching the one on the right! The one on the right did indeed come with a box and sticker that denote model 104 (blue/yellow).