Either this seller is misinformed/misleading, or my optometrist is. https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/183979939692
No step, perhaps the dial was changed at the same time as the caseback. The 1171 bracelet is new too.
Perhaps the seller does not understand precisely what a step dial is on a Speedmaster, it would not be surprising.
I feel like we've seen this watch before in another thread, it's a 145.022-74 with a 27m movement in it. My opinion of that watch (and this, too, if it's not the same one) is that it's a franken with an 861 from another model.
they look like service dial and hands to me. non DON bezel would also be incorrect for '68. a real hodgepodge not worth $7k+