1. Identify the serial number: Find the serial number of your mandolin. This is usually located on the back or inside of the instrument.
2. Check the company's production history: John M. Smyth Co. was in business from 1895 to 1939, so any Faultless mandolin produced during that period will be genuine.
3. Use the serial number list: There are references and resources available that list the serial numbers of John M. Smyth Co. mandolins along with their corresponding production dates. These lists are not always comprehensive, but they can provide a reasonable estimate.
4. Consult with experts: If you are unable to find the information you need, you can contact experts in vintage mandolins or consult with knowledgeable music shops or luthiers who specialize in vintage instruments. They may be able to provide additional information or verify the age of your mandolin based on its features and characteristics.
It's important to note that the age of a John M. Smyth Co. Faultless mandolin doesn't necessarily impact its quality or value. These mandolins are still sought after by collectors and musicians due to their craftsmanship and historical significance.