No for the first question.
Yes for the reference you mentioned.
Now that Speedmasters have such a high MSRP there is plenty of incentive for makers of fake watches to put considerable effort into adding recognizable details to their products. Having said that, nothing in the photos posted above screams to me Fake! But you never know.
Above all else, the most important factor to consider is the reputation of the seller. If you can't verify with 99.9% certainty that the seller is honest and respected, you should stay away regardless of how tempting the price may be.
OP, ask the seller to show you the Master Chronometer card that comes with the watch. It should have the watch's serial number as well as a code. First, match the serial number on the card to the engraved serial number on the watch. Then go to Omega's website and you should be able to use the serial number and the code to access the watch's METAS test results. If the serial number on the card doesn't match the watch and/or the seller won't provide the serial number and the code to you, RED ALERT. By the way, the photos look fine to me.
