An advertising poster for the Keystone comedy released in November 1912, held by the Library of Congress. Keystone opened in 1912 and within three years had industrialised American screen comedy - the chases, the pratfalls, the company that would shortly employ half the great silent comedians. Paper from its opening months is genuinely scarce. How little the design assumes: no established house style yet, because there was not one to draw on. Slapstick, before it knew its own name.

Maker: Unknown
Date: 1912
Medium of the original: Poster
Original held by: Wikimedia Commons
Credit: Wikimedia Commons · via Wikimedia Commons
Rights: Cleared for print
Catalogue number: PA-00787

As chosen: 16 x 20 in, art print, classic frame
Picture	16 x 20 in
Outside size	17.6 x 21.6 in
Depth	0.9 in (22 mm)
Weight	[[REAL PROOF NEEDED: shipped weight per size and frame]]
Hanging	[[REAL PROOF NEEDED: hanging hardware Prodigi fits to this frame]]
Material	Enhanced matte art paper, 200 gsm; acrylic glazing
Made in	Charlotte, North Carolina, by Prodigi

Before a size goes on sale, the file is measured against it: pixels per inch at that size, how much of the picture a crop would lose, tone and sharpness. A size that fails is not offered, so there is nothing to choose wrong.

How the print check works

Sizes offered
Size	dpi	Grade	How it fits
8 x 10 in	337	Excellent	Trimmed 5.5%
11 x 14 in	245	Excellent	Trimmed 3.8%
12 x 16 in	223	Excellent	Trimmed 0.8%
16 x 20 in	168	Good	Trimmed 5.5%

Sizes withheld
Size	Why
8 x 12 in	Wrong shape: a 12% crop
12 x 18 in	Wrong shape: a 12% crop
16 x 24 in	Wrong shape: a 12% crop
18 x 24 in	148 dpi; a historical scan is never enlarged
20 x 30 in	Wrong shape: a 12% crop
24 x 30 in	112 dpi; a historical scan is never enlarged
24 x 36 in	Wrong shape: a 12% crop
30 x 40 in	89 dpi; a historical scan is never enlarged
36 x 48 in	74 dpi; a historical scan is never enlarged
40 x 60 in	Wrong shape: a 12% crop