Lookl at the photos on this page, If it is there contact Sam Custodio to ask him how to get the pattern
https://www.facebook.com/profile.php?id=100069872637157
Welcome to the village. Not sure but I think this is the person @kmmcrafts is thinking of. Would not hurt to ask.
https://www.facebook.com/profile.php?id=61556589420174
Welcome to the forum. Those old green Excaliburs were what started it for that type of saw. If you need parts or info, check with Seyco.com. they carry parts and are very willing to help.
I made this one for a close friend of my son's. He is a retired ordnance Officer. I really struggled doing this. Had or recut some recuts. Maybe I am just getting old.