there is probably no general answer, but most of these pieces com from countries w/ relatively
low wages; because no matter how pathetic the piece, it still takes quite a lot of manhours
to "produce" them.
The Ukraine & Poland seem to specialize in "WWII" pieces, maybe building on the theory that
people believe the millions of German soldiers all wore beautiful, complicated brand name watches .....
There is a guy doing quite nice "marrigae" watches, but the rest are pathetic junk.
China (thankfully) still specialized in fake 3-hands, that have little in common w/ authentic pieces,
but sell like hot cakes ....
Then there is South America, primarily Argentina - the 3-hands are mostly pathetic junk,
made to appeal to buyers who are looking for that "brand new" look, but refinishing
workmanship is actually good, dial refinishing quality often better than we can find
in Europe or the US; so there must be some very, very good artisans there, a requirement
for the "high end" fakes.
But they do come from everywhere, many from from Italy or Spain, but a lot from Germany,
or even the UK, though real Frankenwatches are actually quite rare, in most cases the only
- possibly - authentic piece on the typical "stunning vintage 18k Breitling chronograph from
the 1940s" is the winding crown - put on a noname watch w/ a fake dial.