Some particularly rare Christmas Seals are easy to find unused but are very hard to find attached to their envelopes with a dated cancel.

They were also used to help sell Christmas Seals.

The term "Christmas Seal" is now rarely used in relation to these stamps.

Christmas Seals are labels placed on mail during the Christmas season to raise funds and awareness for charitable programs.

One story told how the children of 58 Toronto schools had sold 10,000 Christmas Seals.

Christmas Seals symbolize the grassroots support of Canadians that helped win the fight against TB.

Many different countries issue their own Christmas Seals, as well as cities, states and territories.

The promotion of Christmas Seals began in Denmark during 1904 as a way to raise money for tuberculosis programs.

Later that year, the three of them filmed a two-minute commercial for Christmas Seals.

Christmas Seals and Easter Seals are perhaps the two best-known types, although many kinds have been made.