It's not a Nintendo Game & Watch game, but there is one special LCD handheld game that I just HAD to find.
It is called "Pac Man", created and sold by Cresta. It was the first ever LCD handheld game that I owned round about the year 1980.
Funny thing is, that it can virtually nowhere be found on the internet, apart from The Handheld Museum.
The one that The Handheld Museum shows is actually NOT the same one I had when I was a kid.
I had a white model with a tiny joystick on the right side. When the player reached a score of 1999 points, the game would be finished and "Thine Be the Glory" (Thine is the glory) would play through the piezo speaker.
Found it! By an extraordinary stroke of luck, I found this game within 4 days after I decided to look for it. It was on a second-hand site, on a photograph of someone's LCD games collection.
model: unknown
year: unknown
It was not mentioned in the title or description of the collection, but it was visible on an overview photograph of an LCD game collection. So I sent the owner an email, and indeed he wanted to sell the item!