Hi Jerry,
This one was discussed earlier. It's 'most likely' (no official proof other than photographic) the standard lanyard used by the Dutch navy (K.M. or Koninklijke Marine).
It appears to be very close in style to the Portugese one. Remarkably, these are imprinted with 'made in england' on the strap.
What I think is that some German subcontractor made loops in this style for a number of foreign contracts, including the Dutch Navy and the Portugese. As they are quite fragile in design, I suppose another supplier based in the UK created these as substitutes.
They have the right patina and smell and I have no doubt these loops are over 50 years old.
These got on the Dutch market in a small quantity last year and I was able to get two of them. There are also versions reported that have a small leather sliding/connecting-piece.
