This the the Losmandy Piggy Back System for the Celestron C11 part number #PB C11. It is a dovetail rail with a camera bracket. It is in very good condition with only light use over the past year. Includes mounting hardware/screws. Asking $50.00 with buyer to pay for shipping. Money order or(Paypal + 3% of total). Shipped from 43212. Email with any questions.
Thanks for looking,