While browsing the advertisments for the New York City Craigslist, I happened to notice a listing for a vintage Criterion Optical Co. RV-6 6-inch F/8.3 Dynascope reflector. (A photograph sure would help.) The ad was posted on November 20th, 2008, and the web site address is:

http://newyork.craigslist.org/jsy/pho/926953692.html
(I am not the seller of the telescope.)

According to the ad, there are six separate eyepieces included with the purchase of the telescope. I wonder if they are all Crico brand (Criterion), or some other type of vintage ocular?