IMHO value depends on a wide variety for these games. 1 Location. In the South west where machines are more common you may not be able to get $300 for either of those games . I live in the New York City area where the prices are slightly higher for a 100% working game. 2. Rarity. The smaller one looks like a 742 with a nice original topper. Still it is a boring 1 coin 1 pull game that would attract the entry collector, nostalgia buff, or parts guy/gal. 3. Condition. Both games look nice for their age. No broken glass that I can see. Gary is right about the tall games. They are hard to move literally and physically.
In all I concur with Gary that your friend should take the first $1000 that he/she can get for both games and run like the wind. Honestly I doubt that a grand will even be offered. $600 would be my guess as a starting bid from someone who wants to play and enjoy the machines.
My opinions are free and worth every penny. Best of luck!
Ra