Sandon, John Books

Antique Porcelain

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This text is aimed at collectors starting out. It covers the different sources of porcelain - auction houses, markets and dealers as well as venues to visit where porcelain may be seen and apprecia...

Antique Glass

By John Sandon, Sandon, John

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Glass is among the most widely collected of all antiques. Since ancient times, the delicacy and beauty of glass has delighted collectors and brought riches to the craftsmen who could transform melt...

Starting To Collect Porcelain

By John Sandon, Sandon, John

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forming A Collection Of Antique Porcelain Is Surprisingly Simple With The Aid Of This Book, Written By A Foremost Authority. John Sandon Presents The Essential Information In A Style Which Is Both...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.