I have recently purchased a pw that has the stamped markings on the bottom that read "BUTTLER GLASS ANDERSON, IN" around the edge and in the center "JEFF 1990" I can not seem to be able to find any info on this weight other that on Worthpoint.com where they had a couple listed. The spelling is correct "BUTTLER" - the pw is a simple green & white swirl. Any help identifying further would greatly be appreciated.