I can’t say this will tell me the century a singing bowl was made, but it can sure point out an obviously new bowl.One of the best ways to date a singing bowl, or at least verify that it is very likely over 100 years old is through the sound.
These singing bowls were all originally quite thick and it takes hundreds of years to wear them down.
While wear may be a good marker for age, singing bowls, like old coins, can go out of circulation for a long period of time and find their way to the present in close to mint condition.
Determining the age of antique brass objects is a mixture of art, science and experience.
Any antique brass object will have its own set of unique characteristics that will offer clues to its age.
Sometimes singing bowls are lost, abandoned, or even buried, preserving their condition for a long time.
Some singing bowls are used in ways where they rarely need cleaning whether as display or for grain storage.
Therefore, my opinion is that some wonderfully preserved Thadobati and Jambati singing bowls can be quite ancient.
Another aspect used to date old metal objects is the extent to which the bottom of those objects have flattened out.
It, of course, may also have to do with the fact that these singing bowls were made by masters with the intent of being instruments of sound.
With Himalayan singing bowls it would make sense that ones that were produced and used with spiritual intent would have special discernible sound characteristics.
It is the judgment of other experts that the types of singing bowls you see on this website are between 80 and 800 years old with the vast majority dating from the 16th to 19th centuries.