Postage stamp silhouettes: Fairly certain I was signed up for a mail order stamp collection at my Dad's... If yes, this might be a good way to go with them. (Now, as for the mail order quarter collection...)
The world's first postage stamp was issued by Great Britain in 1840. Featuring a bust of Queen Victoria, it has come to be known as the "Penny Black." It also marked the introduction of "uniform penny postage" in a mail system: the rate to carry a letter to ANY destination within the country was now the same, and not based on distance carried.