This third generation PVS15 runs like a champ. Left eye is an ITT M851, right eye is a commercial ITT tube of the same era, with one real zone 3 blem, visible clearly in the photos.
It's used and the housing has had a hard life, primarily chips and scratches, the LED indicators are missing on both sides, and has ENVIS ocular lenses (though that's not really an issue for anything other than collimation).
In practice, this all means “carry a spare AA battery”. Price is reflective of the condition, and if you want to get into gen 3 duals, this is a good option for the price.