My friend George Keller has provided me pictures of a coin that bears an encrypted inscription. Can a reader decipher it?
In an online forum, two encrypted postcards from 1911 have been posted. Can a reader solve them?
In a 1932 police journal, an unsolved encrypted message is depicted. Can a reader solve it after nine decades?
Here’s an encrypted postcard from the late 19th century. Can a reader decipher it?
In 1912, a young woman living in Winchester near Southampton received three postcards encrypted in a pigpen variant. Can a reader decipher these?
Between 1945 and 1954, the staff of Spanish prisons used an encryption method based on a cipher slide and a table. Can my readers help to understand how this system worked?
In 1905, a woman in Dorchester, UK received an encrypted postcard. Can a reader decipher it?
An encrypted message, created probably in 1932, has been found on the back of a photograph. Can a reader decipher it?
In 1902, a female aristocrat living near Bayreuth, Germany, received an encrypted postcard. Can a reader decipher it?
Can a reader decipher an encrypted message from Thuringia, Germany?