Hello Alex.
Thanks for the info on the 1970s 4-piece lightweight construction.
I didn't know that .................. about the 4 pieces.
Explains the weight.
Or lack of it !!
I also bought one of these later lightweight Souval 'RK O&S' things when I was about 15 years old ................. around 1973, I think.
Seller said it had been found at a Luftwaffe base at the end of the war.
Sold it to me for £150. That was BIG money for me, back then.
Even as a wet-eared youngster, I concluded it was fake when I compared it to my much better made original EK2 ................ bought for £3 from Stan Paget in Dundee in 1970 ............. and (luckily) got my money back.
We learn from our mistakes !!
As I recall, the lightweight looked something like the pix below ...................
Thanks again for this info.