Great info, thanks!
Juvela>>> the last frame looks a lot like mine, it has no chrome on fork and seat lug, so it was not sanded off as I thought earlier
WAY-Assauto is new name for me, thanks!
T-Mar>>> Thanks on insigths about stem. Strange it has no markings of Made in Italy or TTT. Maybe too cheap to bother with stamping
However, the wedge has markings that looks like SR (or GR), could it be Sakae?
Himespau>>> Hmm, you think the scrathes are too deep to be polished, covered with primer and wet painted? I thought of doing that...
Here are the best pictures of headset stars I could get with my phone, sorry for quality. Indeed, looks like the lateral spikes has some additional "wings", but they are looking quite diferent from star to star. Maybe its just some artifact while manufacturing/stamping?