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    Security is in the bank note

    Security printing is a game of anticipating and responding to criminal threats. Counterfeiting is a game of anticipating and responding to bank note design. This cat and mouse relationship affects every aspect of a bank note.

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Unpacking the Collection 9

By: Raewyn Passmore


December 11, 2018

Tea brick currency

Tee, thé, cha, tsài, tè, teo, chai, teh, chay—these are all words for the beverage made from leaves of the evergreen shrub Camelia sinensis. Wars have been fought to control its trade and gifts of it have been made to ensure peace. It has even been used as currency. In central and northern Asia, bricks of tea were a unit of value and medium of exchange well into the 20th century.

China had a monopoly on the tea trade right up until the 19th century and, as the taste for tea spread, it became an increasingly valuable commodity. It was exchanged for horses in Mongolia and Tibet. Russian caravans travelled for months across Siberia to trade furs for it.

Tea in the form of bricks was durable, easy to pack and, under the right conditions, could be preserved indefinitely. At factories in China’s Sichuan Province, freshly picked leaves were steamed, pounded into powder and then packed into moulds. The bricks were then dried or baked in the sun to harden.

brick of tea with Chinese symbols

The characters tell us that the brick was made by the China Tea Industrial Corporation at the Zhao-Li-Qiao Tea Brick Factory in Hubei Province. Tea brick, China, mid 20th century

The value of a brick depended on both the quality of the tea and the distance it had travelled from China. A French missionary travelling in Tibet in the 19th century wrote, “men bargain by stipulating so many bricks or packets (4 bricks) of tea.” Workmen and servants were paid in bricks of tea and a horse cost 20 packets. At the beginning of the 20th century, Western adventurers in remote parts of Mongolia and Tibet found that they couldn’t use gold or silver to buy supplies, but could only use tea.

brick of tea showing scoring for 16 sections

A very practical money, each tea brick was scored so that sections could be broken off for change, small purchases, or a quick pot of tea. Tea brick, China, mid 20th century

The tea brick shown here was produced in the People’s Republic of China sometime in the mid-20th century. It is in the Bank of Canada Museum’s National Currency Collection and can be seen in Zone 4 of our main gallery along with many curious and fascinating objects that have been used as money.

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Content type(s): Blog posts

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The Museum Blog

November 28, 2014

The Big Nickel

By: Paul S. Berry


The commemorative 1951 5 cent piece was issued to mark the 200th anniversary of the naming of nickel and its isolation as an element. Recently, I had the great pleasure to participate in the Big Nickel anniversary festivities and give a talk about the design competition for the 1951 5 cent coin.
Content type(s): Blog posts
November 6, 2014

The Adventure of Exhibit Planning VI

By: Graham Iddon


This is not the time for ‘nay sayers’. Basically, we planned a luxury car knowing that when all was said and done, it was going to be a very nice family sedan (maybe with the big engine?).
Content type(s): Blog posts
September 29, 2014

The Adventure of Exhibit Planning V

By: Graham Iddon


Now the writer takes a deep breath and attempts to take a subject like the ‘representation of 75 years of national identity as depicted on stamps and bank notes’ from 50 pages of research and squash it into 65 words.
Content type(s): Blog posts
August 6, 2014

The Senior Deputy Governor’s Signature

By: Graham Iddon


Steven S. Poloz & Carolyn Wilkins
For much of their history, Canadian bank notes have represented a promise, a guarantee that they could be redeemed for “specie” (gold and silver coins) at their parent institution.
Content type(s): Blog posts
July 28, 2014

Becoming a Collector V

By: Graham Iddon


Visual glossary of design and security details of Canadian Bank Note: 2004, $20 face
Suppose you walk into a bar frequented by currency collectors and in an attempt to join in you refer to a ‘planchette’ as a ‘rosette’ (beer mugs hit the tables and the pianist stops playing). This could be pretty humiliating and you’ll probably never be able to go to that bar again, at least not on numismatic night.
Content type(s): Blog posts
July 21, 2014

Becoming a Collector IV

By: Graham Iddon


Visual glossary of design details of Canadian coins
Now that you have a grasp of preservation techniques for coins, you might want to familiarize yourself with the finer points of their anatomy. It is all part of your numismatic education and besides, you need to be informed and sound informed when you are buying coins at flea markets or coin fairs.
Content type(s): Blog posts
July 7, 2014

Museum Reconstruction - Part 3

By: Graham Iddon


Bank of canada - Night
Though naturally we are aware that the former Museum space is being gutted, the reality of seeing it empty is still pretty strange for most of us here. In the last blog of this series we showed you the empty cafeteria space that will become the new Museum, as well as some images of the old Museum as it was at the time: stuffed with odds and ends of exhibit cases, the occasional display still on the walls.
Content type(s): Blog posts
June 23, 2014

CENTimental Journey

By: Graham Iddon


With all the blogging we’ve been doing for Voices from the Engraver, you’d think we had nothing else on our exhibition plate. We do, actually, and it’s called CENTimental Journey. This temporary exhibition, hosted at the Canadian Museum of History, walks you through more than 150 years of the Canadian 1 cent piece.
Content type(s): Blog posts
June 16, 2014

Museum Reconstruction - Part 2

By: Graham Iddon


We are coming up on a year since we closed the doors on the physical museum. During that year, we’ve worked very hard to make sure everybody knows that we are still a functioning museum and one that will be opening its doors again in a few years on a beautiful new space, with an expanded mission and mandate.
Content type(s): Blog posts
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