I have
16 diff 1957 Spic and Span Milwaukee Braves cards out on eBay currently. I am not sure how these survived in such great condition, but they did. For those that aren't familiar with the 1950s Braves Spic and Span cards...they were annual regional sets given out to customers of Spic and Span Laundry. Most issues were made of thin paper stock, so they were prone to damage. Often they are found with creases or tears. The 1957 issues are quite desirable due to their scarcity and the fact that 1957 was Milwaukee's only World Series championship year.
These were stunningly preserved. Many are gem mint. Here are the links to the Hank Aaron and the Warren Spahn...sorry, no Mathews. Please check out my other items for more Spic and Spans.
Hank
http://www.ebay.com/itm/160862531189...84.m1555.l2649
Warren
http://www.ebay.com/itm/160862526247...84.m1555.l2649