The Exhibit Postcard series issued from 1926-29 (or more likely 1925-31) is one of the more popular ESCO sets among collectors. With its varied tints and excellent player selection, there's virtually something for everyone. This PSA 6 is for the "photo background" version of the Sisler card, as opposed to the more available plain background, although neither variety is particularly abundant. A vivid purple tint, tending a little to magenta side of the prism, presents brilliantly. Very minor edge chipping can be seen at the top left as oriented, with each corner also lightly tipped.  The image is strong and clear on a well-centered card.  The back is unused and shows some slight hints of foxing.  A very attractive specimen of this subject, almost unimprovable as but a sole 6.5 example exceeds it in the PSA pop report.