Greetings Gents,
That "guy from Poland" is me

I'd like to say hello to everyone and thank for all your attepmts to research new things in WW1 aviation.
Here is the list of serial numbers of the Halbs used in Polish service:
Some halbs received new serial numbers. After capturing the Zeppelin Hangar in Winiary near Poznan (Posen), the Poles found there few hungred planes which were in storage. It looked like this:
So, having so many aircrafts needed to introduce new number schemes to keep some order. But not always. Some kept old ones, some new ones

Here is the list. The first number is the original one, then the Polish.
1. 750/18. Bay, 205/18, Mercedes D.III
2. 752/18, Mercedes D.III
3. 753/18. Bay, 208/18, Mercedes D.III
4. 754/18, Argus As.III 180HP, 221/18
5. 781/18, 201/18, Benz Bz.III, later Mercedes D.III
6. 782/18 (factory no 1746), 202/18, Mercedes D.III
7. 783/18, 215/18, Mercedes D.III
8. 2031/18, 203/18, Mercedes D.III
9. 2821/18, 204/18, Mercedes D.III
10. CL.IIa, 2869/18, 223/18 (tactical no "55"), Mercedes D.III
11. CL.IIa, 2875/18, 222/18, Mercedes D.III
12. CL.IIa, 5760/17, 206/17, Mercedes D.III
13. 6641/18, 226/18, Mercedes D.III
14. 6642/18, 236/18, Mercedes D.III
15. One with unknown number, found in Warsaw on Mokotow Aerodrome in 1918, only fuselage.
16. 15459/17 (factory no 1046), Mercedes D.III, preserved in Aviation Museum in Cracow, captured in 1945, part of Goering's Collection.
Below are some pictures from early 1919. The planes found in the Zep hangar are being assembled and repainted. Many were carrying the same cammo. Only crosses were overpainted by checkboards.
The halb is carrying new Polish number 208/18 (I have another photo at home which comes from different book)
References:
The aircraft list comes from "Samoloty wojskowe w Polsce 1918-1924" (military airplanes in Poland 1918-1924), author: Andrzej Morgala, Bellona Press 1997, Warsaw.
Magazines which I took other references from (those ones which Blowhard mentions about):
Tomasz J. Kopanski, "Walka powietrzna na bolszwickim froncie" (dogfight on the Bolshevik front) in: "Lotnictwo z Szachownica"(aviation with checkboard), no 3, p. 22-24
Piotr Kukialka, Krzysztof Wielgus, "Halberstadt CL.II part 2" in: "Model Hobby", no 20. The pictures were described in Polish and English by Piotr Morozowski. He did all the research about those BFW-built Halbs and described the paint on the Halb with PL ser.no 201/18 Bay.
Regards,
Lukasz Kubacki