dr.kol
11333
Same with me; I'm not an expert.
But in my eyes the dial of 3712 is a bit nicer and the construction is totally different. The case of 3712 is made of two parts just like the original 3700. It expensive to produce. At the same time the case of 5712 is conventional 3-parts case.
Perhaps I should keep my 3712 as a Sunday watch and get a 5712 for the rest of the days.
Best, Kari