Ok thanks guys for all your input!!!! .....
today I tried a little leather restorer on the rear visor and it has made the markings a lot clearer...especially on the right side where hardly anything was visible!!!!...so hopefully now it will now help with trying to track down some of its history!!!
the markings on the right side would seem to be at the bottom left 2 C L B 2...then possibly another number 8???? there is some damage here and it is hard to make out!!!
above that is a 6 C and above and to the left is II L B in the far right edge is 56 ..size????
what do you experts think??
if you need any more photos or details ill be only too happy to post them!!