Publication era
Note:  The Publication Era field, like all our Identifier Fields, is designed to help buyers narrow their search and browse results to just items that have particular values or value ranges.  Sellers should put the exact date of Publication in their description just as they normally would, but by choosing one of these specific 11 Publication eras, the seller will have the chance to reach more buyers who narrow their desired search or browse results to exclude unwanted eras (and any Undeclared items if they wish).

1750 and earlier

 Includes both the Incunabula (pre-1501), Early (1501 thru 1600), and Antiquarian (1601 thru 1750) periods.  Note: Incunabula and Early Period Books have their own subcategories under the Antiquarian and Collectable top-level category.

1751 - 1850

 Begin the Modern period: From the emergence of the New World to the beginnings of the Civil War.

1851 - 1900

  

1901 - 1930

 Pre-Depression, end of Black & White printing era.

1931 - 1950

 Pre-to-Post WWII

1951 - 1969

 End of the Pre-ISBN era.

1970 - 1979

  

1980 - 1989

  

1990 - 1999

  

2000 - 2003

  

2004

  

Undeclared

 The default value for this field. Items with this value generally indicate a book that was bulk uploaded, but the seller didn't want to take the time to edit their records to take advantage of our unique identifier fields which aid buyers who are browsing or searching for particular kinds of items.  Many buyers will eliminate this value from their search or browse results because it adds unwanted items to their results.