Swiss Army Marbles Classic SD Limited Edition The Marbles Classic SD Swiss Army Knife by Victorinox is a Swiss Knife Shop exclusive showcasing the beautiful marbles hand crafted by Fritz Glass on Cape Cod. Beyond its unique design, the Marbles Classic SD is also an excellent and unique key holder. This miniature tool is small enough to fit in any pocket, glove compartment, handbag - anywhere. Add this iconic, original, Swiss-made multi-tool by the makers of the Original Swiss Army Knife to your collection.