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In the 1960s, after abandoning a project to create an arrowhead price guide, Overstreet turned his attention to comics, which had no definitive guide. [1] Comic back-issue prices had stabilized by the end of the 1960s, [2] and, Jerry Bails, who had recently published the Collector's Guide to the First Heroic Age, was considering creating a ...
Comic book price guide. Comic book price guides are typically published on a monthly, quarterly, or yearly basis and provide comprehensive information about the fluctuations in the resale value of comics over a specific duration. These guides play a crucial role for collectors who intend to sell their collection or require an estimate of their ...
Price look-up codes, commonly called PLU codes, PLU numbers, PLUs, produce codes, or produce labels, are a system of numbers that uniquely identify bulk produce sold in grocery stores and supermarkets. The codes have been in use since 1990, and over 1400 have been assigned. [1] The codes are administered by the International Federation for ...
Written in. PHP. ISBNdb.com is a large online database of book information available both via web interface and API. The database includes title, author, ISBN, ISBN13, publisher, publishing date, binding, pages, list price, and more. [1] It contains data on 33+ million books by more than 11 million authors, with more books added every day. [2]
Professional Coin Grading Service (PCGS) is an American third-party coin grading, authentication, attribution, and encapsulation service founded in 1985. The intent of its seven founding dealers, including the firm's former president David Hall, was to standardize grading. [4][5] The firm has divisions in Europe and Asia, and is owned by parent ...
Ulrich's Periodicals Directory (ISSN 0000-0175, and ISSN 0000-2100) is the standard library directory and database providing information about popular and academic magazines, scientific journals, newspapers and other serial publications. [1]
AllMusic. Music information and reviews. ~20,000,000 [7] ~2,200,000 [7] Song samples only. Discogs. • Database: user-generated cross-referenced database of physical & digital releases, artists, and labels. With catalogue numbers, codes, and other markings taken directly from each release.
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