...other glass cracked but otherwise in fine condition. Original owner was swedish by the writing of name and adress on bottom. There are also those yellowish stamps with black star and "junghans J" text on hour panels and which slightly conceal the number 12!
Post Your Vintage Chess Clocks Here

Mystery solved! Opened up the clock, it´s handmade from two alarmclocks! Nicely cut and fitted and very delicate brass leaf moved with the slider stops gently the mechanisms. So the thin flags were also handmade. So, thanks to swedish Anton who apparently made it in -55 according to the date written inside.

Very nice find, Kauhia. For some reason, these clocks w/ wooden slider were common in Sweden. See here for several examples of similar Swedish clocks:
https://picasaweb.google.com/106617072132488462760/ChessClocks#5716704229333093426
From what I gather, a lot of these were hand-built by one Gustav Nyholm using two alarm clocks and custom wooden casings...

Thanks, Frank for info, I wonder if this one could be also made by Gustaf Nyholm. My original assumption of Anton Eller as maker was the writing in bottom, where there was also his exact address (Järfälla near Stockholm) but it could be "just" ownership. Date was inside in different writing and partly concealed by clock attachment screws.
Also, only clocks I found which resemble mine are those attributed to mr. Nyholm
Work is quite precise and routinely done.
Maybe I'll open it again and remove the screws partially to see the exact date writing. -55 was the end.
Anyways, this was 18€ well spent as I have now a working chess clock (my first) and some detective job excitement on side.

there's a lengthy article about the Heuer/Looping clock on this page (scroll down):
http://www.chess-museum.com/essays--notes.html

Hi again.
As you know I am a chess clock collector from Norway, and ask if you want to to sell the SENTINEL clock ?
My email is: hsoiland@gmail.com
Best regards,
Harvard

They are so pretty, and the modern ones all look as if a tamagotchi had an affair with a flounder :-(
Why can't they make modern digital clocks that look a little more elegant like these old ones?

Hmmm - thanks @danielaKay …. I’m now trying to get that vision of the birth of a modern chess clock out of my head! 😳😄
Does anybody know this junghans clock? Bought it yesterday from fleamarket. Tried to search but could not find any junghans clocks with similar wooden slider. Birch case.