Over on the shooting forums I belong to we have a saying that we use when someone asks if he/she needs another gun: "What need got to do with it?"
If you want it and the money spent won't hurt the budget .... go for it.
None of those machine is a redeye. The first is a 66-4 I think, the second is a 127 or 128 I can't be sure and I don't know what the decals are called, the third is the Eldridge and the fourth is a Morse clone.
If you buy the second one I'd love to have the motor and electrical parts from it. Would be glad to split the cost and pay shipping.
Joe