Introduced in 1910. Discontinued in 1917. Very, very rare. I have never seen this back design, apart from the image in Mrs. Robinson’s booklet and the occasional sample card in a salesman’s sample folder or book. Below is an image of such a sample card. The color in the red example above is photoshopped as I have never seen a red card.
Not surprisingly, Margin Snowflake is closely related to the Bicycle Snowflake back. Neither graphic particularly resembles an array of actual snowflakes, which is a bit disappointing.
As of 2026, it became known to me that Margin Snowflake was marketed in the United Kingdom, thanks to Josh Searles, who shared the image of a box he recently purchased (alas, it was empty). See the second image, below.
SALES DATA
A blue Margin Snowflake salesman’s sample card sold on eBay for $225 on February 22, 2017, pictured below. This may be the closest any of us get to a Margin Snowflake deck of cards.