Vintage 1966 Mattel Major Matt Mason astronaut space helmet.  This is for the helmet only.   This helmet is in good condition for its age but looks to have a bend in the plastic along the front lower portion of the helmet which is covered when yellow visor is lowered shown in photos.  It's possible to use heat to fix this but I'm leaving that up to the new owner.  There are no cracks or other damage that I can  see.   Please see all photos on condition.