First, I would inflate it fully and let it sit undisturbed for a bit to see if there is any leakage. I owned and used a Ranger many years ago, but switched to something else. For me anyway, it seemed to have a lot of inherent positive buoyancy, which needed extra lead to overcome. It seemed overly bulky, and I don't like the "Ripcord" weight release system. On the positive side, it seems to be extremely well made, and durable. This is, of course, just my opinion. It just wasn't my cup of tea. I'm sure there are some current, happy Ranger users out there. Hopefully they can provide more info as to the age, value etc. If it holds air, and you want to use it, you could take it by your LDS for an inspection and service. They can do a more detailed inspection to make sure everything is working properly. Zeagle definitely makes a quality product. My wife has been using a Zena for about 14 years and we just had Zeagle update it and replace the old aircell/ inflator. Cost was around 200.00, but, she loves the BC and that is way less expensive than buying a new one.