"ASTRA" Propeller on Fokker D.VII

Doea anyone have a front view of this propellor ? I find the profile very interesting - especially the apparant droop or washout on the tips - and need the front profile for a model.

I'm also asking on the "Aerodrome", and one of the experts there has mentioned a similarity to the Wolff, but I really would prefer a photo or drawing to get the shape correct.

TIA