Next batch: (still from the Trait d'Union magazine, #260)
MS-275 C1S (no date) single-seat fighter, 600hp
MS-276 (no date) single-seat fighter
MS-277 (no date) Hispano 12 X engine
MS-344 (1933) Training
MS-351 (1936) Aerobatics
MS-360 (1934) Tourism, 3 seat
MS-370 (1934) two Gnôme-Rhône 9 Kbrs
MS-380 (1934) two seat fighter
MS-390 (1934) two seat fighter, two Hispano 12Ybrs engines, 650hp
MS-400 (1934) single-seat fighter
MS-406L (1939) MS-406 for Lithuania
MS-420 (1931) TWIN-BOOM pusher fighter, single-seat fighter, Hispano 12Mc engine of 500hp
EDIT: The MS-420 is presented and discussed at http://www.secretprojects.co.uk/forum/index.php/topic,9707.0.html