A terracotta volute-krater with its stand — the most architectural of the wine-mixing vessels, its handles scrolling up above the rim. A faithful reproduction of a public-domain work in The Metropolitan Museum (CC0). A bowl this ceremonial was the centrepiece; the wine it mixed was the evening’s whole argument. Some vessels exist to make the pouring an event.

Maker: Unknown
Date: ca. 430 BCE
Medium of the original: Painting
Original held by: The Metropolitan Museum of Art, New York
Credit: The Metropolitan Museum of Art, New York
Rights: Cleared for print
Catalogue number: PA-00219

As chosen: 12 x 18 in, art print, classic frame
Picture	12 x 18 in
Outside size	13.6 x 19.6 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 12 in	237	Excellent	Trimmed 6.8%
11 x 14 in	185	Good	Trimmed 9%
12 x 16 in	170	Good	Trimmed 4.6%
12 x 18 in	158	Good	Trimmed 6.8%

Sizes withheld
Size	Why
8 x 10 in	Wrong shape: a 11% crop
16 x 20 in	Wrong shape: a 11% crop
16 x 24 in	118 dpi; a historical scan is never enlarged
18 x 24 in	113 dpi; a historical scan is never enlarged
20 x 30 in	95 dpi; a historical scan is never enlarged
24 x 30 in	Wrong shape: a 11% crop
24 x 36 in	79 dpi; a historical scan is never enlarged
30 x 40 in	68 dpi; a historical scan is never enlarged
36 x 48 in	56 dpi; a historical scan is never enlarged
40 x 60 in	47 dpi; a historical scan is never enlarged