2.8x Klee Barlow from University Optics w/original box and end cap. Mint condition. Barrel marks are hard to find. Bought it brand new a few weeks ago, but now I plan to fulfill the need with one of the new type 6 Naglers.
There is a modification. I replaced the run-of-the-mill metal thumbscrew with a #6x32 Nylon thumbscrew.
$70 shipped Priority Mail to US destinations. PayPal okay.