how to tell what the year it is made. serial # 541991
i would say it's from '91 by looking at the last 2 numbers. i could be wrong. the newer true's don't usually have anything that resembles a date in their serial number. but your serial number doesn't show up on their website. try giving them a call DIRECT SERVICE LINE: 855.472.1468
According to True... your Model T-BB-4 with serial # 541991 was built in 1989.
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