1964 Austrian Olympic proof set in case-9 coins incl Olympics ski jumper

Description

The 1964 Austrian Olympics proof set is comprised of 9 coins:
50 schilling Innsbruck Olympics coin - the Alpine ski jumper - 20 grams - 90% silver
25 schilling Franz Grittparzer coin - Austrian poet - 13 grams - 80% silver
10 schilling Austrian woman in traditional hat coin - 7.5 grams - 64% silver
5 schilling Lipizzaner horse coin - Spanish Court riding school - 5.2 grams - 64% silver
1 schilling edelweiss flowers coin - bronze
& the smaller denominations - 50 groschen (bronze), 10 groshen (aluminum), 5 groschen (zinc) & 2 groschen (aluminum).
The coins are enclosed in a red leatherette case with a foldover brass closure & the national coat of arms of Austria on the top.of the case.  Inside, the coins are set in a red velveteen coin platform with varying size coin inset circles.  The interior top lining is whitiish sateen fabric. The case itself is 4 3/4" top to bottom x 5 3/4" side to side. The coins are in very good condition overall - the most discolored coin is the 5 groschen zinc coin while the silver, bronze & aluminum coins seem to have held up much better - see photos.