How do I find out what year my bike is

There is no serial number database for those bikes

https://www.google.com/search?q=white+super+chief+bicycle+date+of+manufacture

https://www.google.com/search?q=white%27s+super+chief


..

Google "haro serial number" or ask at a bmx site, but it's not important what year it is for repair parts. Model, having original equipment, and cosmetic/mechanical condition are all more important than exact year as far as resale value.

Impossible to ID most bikes by serial number alone, let alone assign a value without knowing condition, amount of original parts, etc. Do a little work yourself - Google "(brand/model) serial number" (without quotes) or at least tell us what kind of bike it is. See my tip:
How to determine the year value etc of your bicycle

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Usually not possible to ID a bike by serial number, but it may be a Vortex. Serial Number Cic Otherwise: How to determine the year value etc of your bicycle

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Unfortunately, the bikes made after 1986 have no record of manufacture date codes.

your best bet is to take it to a Gary Fisher or Trek dealer (Trek owns Gary Fisher, Bontrager and Klien) They should be able to quickly tell you what year it is.

bicycle serial numbers are not like automobile VIN's, they are pretty much useless to the general public and only mean something to the factory and only tell us when the frame was made but nothing about any of the components and other parts. It is better to describe the year, make and model, tire size and type and type of drive train components to give us a better sense of what you have and any competent bike shop can give you a good estimate of what it is worth.

1949 is the year of this serial number
Look at this website to verify my findings

http://www.re-cycle.com/history/Schwinn/SwnB_Serial.aspx

go to the website of what type of bike it is.they should be able to help or contact a dealer.