This is the TeleVue Standard 96% Reflectivity Enhanced Aluminum Coated 2" Diagonal. It has the thumbscrew - not the compression ring. Also included is a TeleVue 2" Focuser to 1-1/4" Eyepiece Adapter, also the thumbscrew type.
I received these items along with a TV-102 that I purchased used. The original owner said it was approximately one year old. There are no defects that I can see other than marks on the Diagonal's thumbscrew groove from normal use. The mirror looks great.
$165 for both including shipping (UPS Ground - CONUS. Postal Money Order Preferred.