The Romanian M73 Helmet is an improved design from the M39 with a 4-point chinstrap and a shorter skirt to allow more comfort for laying prone. These helmets were used from 1973 to the early 2000s, and many are dated as early as 1974 and as late as 1985. 
 
These are a 1 size fits all, so most heads will fit comfortably in them. Also has a hole in the back to strap it to the Romanian rucksack.
 
Many will have some rust spots and storage wear as these are all used. Nonetheless, they are still in great condition, and with a simple cleanup, they will display well. 
 
Not to be used for actual ballistics. These are sold as collectibles.