BRK-B Stock Berkshire Hathaway Class B Stock Certificate. Berkshire Hathaway Partnered With Security-Columbian and Produced Approximately 20 Physical Stock Certificates in 1996. Printed Signature of Billionaire Warren Buffet. This Specimen is Dated From 1996 and is 30 Years-Old. Years Later, All Other Stock Certificates Have Been Lost or Accidentally Destroyed. No Other Berkshire Hathaway Stock Certificates are Known To Exist. Berkshire Hathaway 1 of 1 Stock Certificate Specimen $100,000,000,000.00.