German prop id

[Geertse]

Hello,
Can someone help me?
Can you id the markings on this 6 bolt prop?
Number 9931
120 ps
Mercedes
D275
St 165
Z
What does the Z means?
There's also no manufacturer on it.
What aircraft could it be?
Also mentioned is stand 1280
On the hub also the number 9931 repeated and a T and Z.
Hub diameter is 185mm
Blade width 200mm
Blade lenght 1340mm
Axle diameter 70mm
ThX

[Geertse]

Another photo

Another one

[Geertse]

The story from the props seller is that it came from the airfield of Gistel in Flanders Belgium. So if anyone knows more about the types of airplanes that are used on that airfield please let me know.
Greetings

[Geertse]

As you can see it's from a crash.

[Bob Gardner]

Geerste,

The prop is from a BI or D1 aircraft (and their derivatives such as BII, BIII etc). Examples are;

Alb BI, BII
Halb D2
LVG BIII

Z probably indicates ZUG, meaning a tractor prop but might also be part of 6 ZYL to differentiate the prop from one intended for the contemporary four cylinder Mercedes engine.

With kind regards,

Bob

[Geertse]

Prop

Thanks for the info!
That explains where it was found (Gistel)
There was the BAO that uses B-type aircraft during 1915.
Brieftaubenabteilung Oostende.
Can it be a Reschke propeller?
Greetings,
Geert

[Geertse]

Prop

Does the serial number match with 1915 if it's a Reschke prop?
Grtz

[Bob Gardner]

Geerste,

The 100ps Merc engine was also used with the Tauben. I don't think I have recorded one with the 120ps engine, but of course it is very likely that it was.

Reschke is my guess too, for the maker.

Bob

[Geertse]

Prop

It's a pity that it's broken, but it then has a history since it came from a crash or belly landing. Also it stayed in the neighbourhood of the airfield of Gistel. Not thrown away or burned as firewood or cut in halve. It's untouched and as found.
Thx Bob for the info!
Looking forward for your next book!
Thx