I have and still use almost exclusivly a Wild and also a Barr & Stroud military rangfinder. Of the two id reccomend the Wild as it would be newer and would no doubt have coated optics. Otherwise they would be almost identicle in appearance and function. Ebay will on occaision have one listed under military rangefinders.
Be sure the small connecting tripod is included, otherwise attaching it to an after
market tripod will be more difficult but not impossible. They actually have two tripods, the small one attaches to the unit and then fits into a larger one of about 3 ft in height. As a rule both would be included, but on occaision one will be missing.
A fair price would be $300/$400.