COVER N.30 - Poland
Postmark:  - 24JUL2021, Warszawa
Posted on the  21stJuly; received on the 9th August.
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When I went to check my letterbox  today, I could swear propeller noise was  rising from the depths of it….I eagerly opened it to find this beautiful cover sent from Poland. Thank you so much, Roman.

Knowing my interest in all things air, Roman went through the trouble of securing me a cover with a special cancellation commemorative of the 90th anniversary of the Polish Police Aviation branch, which must have been established in 1931, although I could not find any detailed information of this particular air service on the web.

To ensure a suitable landing spot for the large  commemorative postmark, Roman used the two stamps of a set issued on 22AUG2015 both as individual stamps and in se-tenant form commemorative of the 2015 Radom Air Show. 

The Radom air show is the most important air show in Poland and also one of the major airshows in Europe. It takes place every two years at the Radom-Sadkow air base. 

The two stamps have an identical face value of 2.35 Zloty, and both show products of the Polish aviation industry in the form of a  PZL-Świdnik SW-4 light single-engine multipurpose helicopter, which entered service in 2002 with the Polish Air Force, and a single engine, two seat,  turbo-prop trainer aircraft, the  PZL-130 Orlik, manufactured by PZL Warszawa-Okecie , which entered service with the Polish air force in 1994.

A third stamp with a face value of   3.30 ZL was used by Roman on this cover, this having been the first Polish stamp issued in 2020, on 17JAN2020, as part of a definitive series started in 2018, dedicated to the cities of Poland. The other stamp of this series for the year was a 10ZŁ stamp representing the city of  the Żywiec.

The Large circular commemorative postmark shows a Black Hawk Helicopter of which the special operation branch of the Polish Army operates 5 units partially locally built by the PZL Mielec  factory, now a subsidiary of Lockheed Martin, encircled by the phrase "90 Lat Lotnictwa Policjinego" (90 Years of Police Aviation) and the date and place of apposition: 24-07-2021 WARSZAWA”.