Thanks so much for scanning those,,have always loved looking at them.
The card that shows the Golden J, with the blue carpet, is the card the saleman left with my Grandma when she bought her Golden J in the Spring of 1976. Her machine is this exact model, with the 50th Anniversary stickers.
Evidently the end of the Golden Js, before start of the selling of the Super J.
Notice on the 2 cards for the Silverado Deluxe,,the first one is a first run Silverado,,the front handle behind the on/off swith is missing, and Same body style as the Super J, only in Silver.
One the second card, the handle IS there, so evidently a little later production, but still in 1982,, But both cards show the same PN.