Empty glass ashtray large format pocket

This large glass ashtray made of france (it is stamped in very small in the bottom) probably in the 70s or 80s will not go unnoticed. It is very large and heavy so it is very stable, and it has many concave facets that reflect light nicely. It has 4 cigarette slots but would also make an original pocket empty. It is in very good condition, neither crack nor shine, barely a few small scratches almost invisible in the background. It measures 20 cm in diameter, 5.5 cm in height and weighs just over 1 kg.