They are 12.7 from toe to heel. The rubber is still flexible. There is some smoothing of the tread. The ankle patches have some wear. These are very collectible and will only increase in value in years to come.
I have been collecting Chuck Taylors for many years and have about 400 pairs in my collection shown in the pictures. The item "VINTAGE CONVERSE ORANGE HIGH TOPS MADE IN USA SIZE 11.5 BLACK TAGS 1970" is in sale since Wednesday, November 15, 2017. This item is in the category "Clothing, Shoes & Accessories\Vintage\Men's Vintage Shoes".
The seller is "mrecob" and is located in Sunnyvale, California. This item can be shipped worldwide.