Help with identifying a wheel

[Voss]

I bought a wheel (going to use it as a spare) from a guy a few weeks back. From the pics he sent it was clearly a 14 x 5.5" wheel, correct for my -68 Charger. However, when I got the wheel it was not the same... 

The wheel he sent me is 14x6". It is stamped 6 0 close to the air stem. On the inside there are more numbers. It is clearly a 14x6", but what are the other numbers? And does anyone know what cars came with this type of wheel? I'm going to sell it and keep searching for a correct 14x5.5 so would be good to know.