Can't tell right now, I expect package to arrive today or on monday. I can then check for any manufacturer mark. On the other hand i wanted datasheet mainly to draw the footprint and 3d model, which i can do without datasheet when i have switches in my hands.
Only dimensions given on auction site are 12x12mm (industry standard i guess) and the height excluding the leads is 4mm. I don't know how accurate this 4mm really is, because seller said they don't have any detailed datasheet, which means they have measured the switch themselves. My best bet would be that in reality it's 4.3mm as the vast majority of buttons are.