Not surprising since lot of these boutique or "independent" brands source their case from the same supplier.
Actually my Korsbek watches have the same casing as the KOBOLD watches...
made by Frikker casing in Germany...... till today.. I still can't understand why
KOBOLD is so expensive...runs a ETA movement..
I had a chance of a IWC topgun awhile back... whilst in Holland, I asked the jeweler about its movement..
apparently the IWC topgun Uses the ETA movement but IWC replaced some of the ETA movement components
with IWC components...
As for me at 4300 euros... its not cheap.... since then I lost the love and gone with rolex...