Moscow Oblast , is a federal subject of Russia. Its area, at 45,900 km2 (17,700 sq mi), is relatively small compared to other federal subjects, but it is one of the most densely populated regions in the countryand, with the population of 7,231,068 (2015), is the second most populous federal subject.There is no official administrative center of Moscow Oblast; its public authorities are located in Moscow and across other locations in the oblast.
The oblast was founded in 1929. It borders Tver Oblast in the northwest, Yaroslavl Oblast in the north, Vladimir Oblast in the northeast and east, Ryazan Oblast in the southeast, Tula Oblast in the south, Kaluga Oblast in the southwest and Smolensk Oblast in the west. In the center stands the federal city of Moscow, which is a separate federal subject in its own right.
My 20th Russian Federal Subject - Moscow oblast reached safely today. My friend Elena from Vladimir Oblast went to Moscow for getting pictorial postmark and send with perfect hand cancellation. When I received cover from Vladimir Oblast by the help of Rabtsun, she was sad because she was very much interested to participate in my Russian cover project. So I again prepared covers and sent to her. She used 'Region of Russia' series stamp too - which is my ideal stamp from each federal subject of Russia.
This is mother cover sent by Elena from Moscow Oblast with Moscow regular postmark. Thank You very much for the big help you did for me.