Angelus alarm crown screw

[ZaphodDent]

Hi everybody,
as there is a holiday today in Germany I wanted to take a look at my Angelus SF240 inside of a Liliputaner case. Is there a trick how to remove the screw holding down the crown to set the alarm? I could remove all screws except this one. It seems to be really tight. Hope somebody can help me.

4DFE8051-8BAA-4D99-B196-081D92748628.jpeg

[EP.-]

Use the largest screwdriver that will fit the hole but sharpen it well before use.
with a screwdriver that covers the entire screw slot you will exert more force, and with the sharp screwdriver you will be ensuring that it enters the screw slot.
I once had the same problem and it was solved with a sharp screwdriver.

[Yoda]

Hold the knob and apply pressure to the screwdriver and the screw will let go.

[ZaphodDent]

Thanks for your help. With your tips I was able to remove the screw

[Yoda]

Good to hear!