https://guitarz.blogspot.com/2014/03/supro-normandy-s613-very-cool-vintage.html?m=1
Guitar Blog: Supro Normandy S613 - a very cool vintage guitar from Chicago
guitarz.blogspot.com : It might have not have the snuggest fit of a neck into the neck pocket and perhaps a higher action than many of us...
guitar blogvery coolsupronormandy
https://knowledge.broadcom.com/external/article/217267/ca-view-s61324-error-received-in-sarstc.html
CA View - S613-24 Error Received in SARSTC with Tape Backup in our DR System