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Richard, Buds Customer Service will need to confirm this at 1-859-368-0371 9am-9pm EST Mon-Fri. or use the Blue Chat now button at the bottom right corner 9am to 9pm Mon-Sat and 11am - 7pm Sun (7 days a week).

there is no way to know as sig gets them from various sources I can tell you that Mine was marked NPD and 4 digits (badge number) (bought in September 2018 )