In celebration of the 50th anniversary of BBC's "Dr. Who," the Royal Mail is releasing collectible stamps featuring the show's characters.

"It's 50 years since a strange old man stepped out of a Police Box in a scrapyard down Totter's Lane, and the most beloved and exciting television series in the universe began," the promotional site for the stamps reads. "Since then, the Time Lord has had many faces and battled many foes, and his adventures look set to continue for years to come."

The collection begins with the first doctor, William Hartnell, and celebrates each subsequent doctor, reaching the current one, Matt Smith.

"We are delighted to be able to celebrate this remarkable 50th anniversary," said Andrew Hammond, managing director of stamps and collectibles at Royal Mail, according to the Daily Mail. "These stamps pay tribute to the brilliant actors that have played the Doctor over the years as well as the adversaries that helped make the show so popular."

The "Dr. Who" stamps will become available on March 26, 2013.