Russia: The 150th Anniversary of the City of Mariehamn!

I earlier arranged cover with this mini sheet for my Nina, but sheet was stolen from cover, and it's sent again, but this time inside cover. Mini sheet is dedicated to The 150th Anniversary of the City of Mariehamn, and is issued on 21.2.2011. Mariehamn is today capital of Åland, an autonomous territory under Finnish sovereignty, but it was part of Russian Empire and named after Russian empress Maria Alexandrovna.

Stamps used on cover:
Coat of arms of the town of Alexandrov, issued on 18.6.2013.
The 25th Anniversary of the Republic of Ingushetia, issued on 4.6.2017.
Novgorod Kremlin, issued on 1.10.2009.

Inside was also this nice philatelic postcard.

Thank you Ekaterina!