Kriegsmarine Zeiss blc 7x50 U-boat binocular rubber armour

An incredibly rare spare set of original rubber armour pieces (ocular lens / prism housing guards) for the mid to late-war Kriegsmarine 7x50 U-boat binoculars produced by Zeiss (blc).   
 
The rubber on this pair remains in great condition, with only relatively minor age cracking and no substantial damage at all. The metal eyepiece clips/screws, whilst still present with the set, may require replacement. 
 
Note that these are guaranteed original pieces and NOT modern reproductions.
 
They would form the perfect set to complete a Zeiss 'blc' 7x50 U-boat binocular which may be missing these vital parts, or indeed for use to exchange current ones if in badly deteriorated/damaged condition. 
 
You are very unlikely to ever find another spare original set on offer like this!