A list I have from a Canadian sale about 15 years ago lists two Perris specials,
1) 51137 20 inch RB, straight stock,checkered wood, engraved panels, gold plated scews, new unfired condition, complete with documentation from 1904
2) 49005 20 inch RB, Perris special engraved on left, tang sight,
well used prototype of the above rifle and is included in the documentation
BillR