641

• 

  Canada OFDC #641 – Invention of the Telephone (1974) 2 x 8¢

  $1.10
• 

  Canada OFDC #641 – Invention of the Telephone (1974) 8¢

  $0.85
• 

  Canada OFDC #641 -PLATE BLOCK – Invention of the Telephone (1974) 4x 8¢

  $1.60
• 

  Canada Stamp PB#641 – Telephones (1974) 8¢

  $1.50