your jetons are the last issue used from 1976 till 12-31-2001. Since 01-01-2002 they have the Euro in Monaco, and chanced the jetons to the ones Marty shows in his picture.
The 10 and the 20 are very common. The value would be $2 or $3 each.
The 50 and 100 are a little rarer. I would state the value at $10 for the 50, and $15 for the 100.

I really love all the chips, plaques and jetons from Monaco. They are my favorites in my collection.
The casino in Monaco is the the most beautiful casino here in Europe, and one of the oldest.
I heard that the casino will be closed for some months for a renovation during this summer.

Regards from Germany,
Björn Zabel
www.casino-chips.de
R-5585