To identify and authenticate items as Blenko with absolute certainty one must be able to match a form with a Blenko design number. Blenko produced an annual catalog in each of the Historical Period years and thereafter (1947 onwards) and also most years prior. Each catalog identifies every shape available for purchase that year with a photo and corresponding design number. Fortunately all the catalogs of the Historical Period (1947-74) are available from the following sources:

Vintage Catalogs - Historic Reproductions

In cooperation with the Blenko Museum, high quality spiral-bound reproductions, digitally restored, are currently available for the catalog years shown below. Currently these may be purchase through the Vintage Catalogs ebay bookstore. They will soon be available directly from www.VintageCatalogs.com.

IMPORTANT NOTE: All pre-1948 catalog-year assignations are only estimates. Blenko catalogs of this period were never printed with a date. Until there is conclusive evidence regarding exact dates, the catalogs will be shown here in chronological order and assigned a tentative "circa" date. So far as our research indicates, all claims of conclusive dates are as yet unsubstantiated.

click images to enlarge

full catalog available for viewing online through the links below.

available at various online booksellers (ex: Barnes & Noble) and directly from the publisher's website

"Blenko Catalogs, 1959-1961 and 1984-2001", Schiffer Publishing, Ltd 2002, ISBN 0-7643-1651-6, Note: factual errors in preface and a price guide that is best ignored

"Blenko Glass, 1972-1983 Catalogues", Schiffer Publishing, Ltd 2001, ISBN 0-7643-1383-5, Note: timeline and preface both contain factual errors, price guide is best ignored