1963 BMW brochure ,dealer confidential letter, original envelope

1963 BMW motorcycle complete line sales brochure ad pamphlet catalog, with confidential letter from the distributor on prices, plus a second letter of list prices and options available, plus the original embossed envelope that it was sent in. Another rare  4 piece collectable that no one else has. Will combine shipping on multiple purchases. Covers the 1963 BMW 250 R 27, 500 BMW R50, 500 BMW R 50s, 600 BMW R60, 600 BMW R69S