Thank you for viewing my item!    Available is a vintage Bausch & Lomb Microscope.    It is for the model 31-74-24.   The item does turn on and light up.    It has a single lens but has 4 Objectives.    The item is in good clean physical condition.     The objectives are 10/0.25, 40/0.65, 4/0.10 and 100/1.25.    Shipping will be priority mail charges on 10 pounds in the US.    Outside the US will be calculated shipping charges on 10 pounds through global shipping program to select countries.