Russia 4175-4177 blocks/4

Russia 4175-4177 blocks of 4, MNH, $8.00. Michel 4216-4218. Cosmonauts' Day 1974. Meteorological satellite Meteor; Cosmonauts V.G.Lazarev, O.G.Makarov, P.I.Klimuk, V.V.Lebedev, Soyuz-12-13. 10 kop stamps blocks are folded along vertical perforation.