Leningrad refurbs has been tossed around, but such is hard to substantiate. It is certainly plausible... As far as rarity goes, what might seem likely is probably not the case. These relined helmets are fairly common on the market. I'd say 40-50% of the ones I come across are of this variety. I know that one large cache of these did come from sources in the Baltic in 2001-2002 (which also adds to the Leningrad theory), so for a while they were everywhere. Same for the Ssh-39s of this type as well. This type Ssh-36 should have been of no surprise to someone keeping up with available reference. The first place I ever saw this type helmet was in Shalito's first reference work "Red Army Uniforms of WW2 in Colour Photographs". The small format, Europa Militaria book published by Windrow and Greene. The Ssh-36 shown in the book, best on pages 11 & 25, is clearly one of this type and that book was written in 1992. You can see the replacement chinstrap and the high rivets. Mike B.