Hello my name is Chichi375 I am looking for a stock expert. I have old stock certificate from Greenfield Industries that merged in 1997 with Kennametals . I have 6000 shares and want to know what it is worth. I moved to a different state so never received any mail or notification. I have been advised that Kennametal offered 38.00 per share to Greenfield's shareholders. Where can I find out if my stock is worthless or valuable??