This is a photo montage. I’ve seen the same aircraft with different backgrounds. The craft is a Boeing 727-232 delivered to Delta in 1973. Delta flew it for 11 years, the it went to People Express, then Continental and finally to Kitty Hawk Aircargo before it was scrapped in 1999. It’s N453DA.
The card is probably one published by Delta and included in the “Welcome Aboard” folder passengers were given. The card may date to the early 70s.
I didn’t pay $2.50 for it. Everything at the antique store was half off that day. Surprisingly, this one was actually in the “Aircraft” section of several boxes of cards.