The watch is authentic, you don't need movement pics. This is commonly referred to as the Speedmaster "Reduced", reference 3510.50. If you do some googling for "speedmaster reduced" you will learn a lot about this piece, and, how most of the time, the discussion quickly moves towards buying a Speedmaster "Professional" moonwatch. There is nothing wrong with this Speedmaster reduced watch at all, if you prefer automatics, a smaller case diameter (the reduced is 38mm) and a lower price point, but still like the Omega Speedmaster "look", then this is the watch for you. If on the other hand, the added benefits of the Professional model are of value to you (as they are to most Omega owners), and the price differential is tolerable, then you might want to consider the Professional model.