I have been asked to sell these crystal bowls which have been in the same family for generations. I'm not sure how many generations, but it is old.
The family has links to (and I think originated from Canada.
The large bowl is It's about 9 cm high at its highest point and the diameter is approx 21 cm, (outside rim to outside rim). it has a saw tooth edge.
There are 6 accompanying smaller bowls. They are about 10 cm high and diameter is about 11.5 cm.
The crystal is about 0.8 cm thick on the small bowls and 1 cm thick on the large bowl.
I'm not able to find any markings.
I've only been able to upload 1 photo. For some reasond the others won't upload.