item #RA2xx. No mounting ring. The glass and coatings are nice both front and back. All speeds including T and B work well. 1 2 5 10 25 50 100 200 400. The f stops are in good working order. There is a viewing button so the lens may be held open at all speeds for ground glass viewing. The front of the shutter shows plenty of wear. The board is not included. Condition 7+.