Antique Set of 4 retailer Asian BRASS Nesting Bowls w Handles SINGING BOWLS/ Gongs

This old Asian brass set of 4 “Singing Bowls” is a rare find for a collector of Asian antiques.
The bowls are of different sizes, and each of them is making a different sound. Connoisseurs are able to play melodies using such bowls.
Used for meditation, mind healing, peace state, prayers.
Total set weight- 2lb. 8.7oz.
Measurements:

The biggest bowl:
Diameter- 4 5/8”
Width w Handles- 6 ¼”
Height- 1 3/8”

The Second big bowl:
Diameter- 4”
Width w Handles- 5 ½”
Height- retailer 1 3/8”

The third by size bowl:
Diameter- 3 ¼:
Width w Handles- 4 3/8”
Height

The smallest bowl:
Diameter- 2 ½”
Width w Handles- 3 ¾”
Height7/8”