Steinhart are excellent quality watches and very good value for money. There are those on here that don't like homage watches, full stop - but others don't mind as long as it is a homage to a watch long out of production.
The Mark 2.5 is a bit of gimmick, the Mark 1 had a matt black dial that people like, the Mark 2 had a horrible charcoal grey dial that most people don't like. For the 2.5 they seem to have produced a dial which is nearer to the black, but not quite as good as the Mark 1 - so the likes of Gnomon (Steinhart main dealer in Singapore) listed it as a 2.5. It is not a limited or special edition.
I have had about 8 Steinharts over the past few years. Down to just one now, the Mark 1 vintage Red.
e-bay is a good place to look and the odd bargain can be had.