NOs Spare parts catalog

Many of you think that NOS is an acronym for New Old Stock.  Perhaps it does, but sometimes for me is means Unable To Resist!    I already had a very nice Factory Issue 356 B Spare Parts Catalog, then I saw this one that is pure NOS. Sometimes NOS does not mean it is in good condition, but in this case, it is really really great condition.  Part of what happens to these B catalogs is the maroon paper on at the binding end fads, tears or in other ways becomes cosmetically poor.  I think this book was kept in a box, away from damaging light.  Even the front cover is much brighter than others I have seen.
Pictures below and I have now added it to my Documents Section