Identifying unknown focusing screen

Grim Tuesday

Member
Joined
Oct 1, 2018
Messages
737
Location
Philadelphia
Format
Medium Format
I am scanning around for a brighter screen for my Hasselblad and ran across this one:
It's labeled as original but obviously isn't the standard ground glass with fresnel. Is this an acute matte? Beattie? Maxwell? Chinesium?
 
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