Bill Barrell Ltd, The line engraved printing process explained

Описание к видео Bill Barrell Ltd, The line engraved printing process explained

Bill Barrell chats with leading 1d red collector and line engraved expert Mike Williams about how the printing plates for the 1d black 1d red etc were made, discusses the 1d black and examines actual examples of a very fine 1d black first day cover, 1d black imprimaturs and what is believed to be the finest used example of the celebrated 'B' blank 'A' error.
https://www.barrell.co.uk/

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