Odd looking Speedmaster

Yesterday I was at Gerards place and he asked me if Speedmasters always were chronographs. I didnt have to think long and said that I cant remember seeing them. Then he showed me this Omega brochure from 1991 with a Speedmaster on the cover which wasnt a chronograph. The referencenumber is definately Speedmaster, since it is in the 3000-series. The case-shape showed some similairities as well (notice the outside of the lugs). But thats it.No Speedmaster on the dial as well, but I was told that the caseback had Speedmaster engraved.Click here for the thread over at the Speedmaster Forum at The Speedmaster Club