Arts & Crafts antique vintage ironstone plate blue & white Roycroft style Onondaga OP Co Syracuse china

Lovely old Onondaga pottery Syracuse ironstone china plate in a Roycroft style floral pattern I've never seen before.

The design is all blue on white, much bigger and bolder than the Roycroft pieces I've seen. I can't find another like it anywhere on the internet, I guess it's a rare one. Maybe it's a William Morris design or something similar and not Roycroft at all!

This is heavy ironstone restaurant ware, an all-purpose plate measuring about 9" in diameter. Shows noticeable wear from use, but no chips or cracks.