OK I think I see your issue, in what you mean with professional... Is it how the O, S, and P line up? the No T dial (B1) does not line up in a straight line on the start of each of the characters, while the (b2) and later do. At least as seen in the MWO pictures. This appears to have the earlier line up as seen on the no T dial.
My answer is that there can be some variance on this and so far has not been noted anywhere.
Another answer is there is a slight difference between the B1 and B2 that no one has described, and this dial is in fact a B1bis dial with the T's added later, we would need better shots of the "swiss made" to determine. The "m" in speedmaster is correct for a b2 or B1 dial.
outside of that the dial looks as it should. Narrow T swiss, narrow "E", and correct speedmaster font, none of these would be present on a later service dial.