Domestic registered letter with perfin “S.K.” in the stamp. The letter is franked correctly with 20 + 5 øre = 25 øre, 10 øre was the rate for domestic letters in the period from July 1st 1902 to September 30th 1919 and 15 øre was the fee for registering. The stamp is cancelled September 8th 1906 with Bro Ia Skive ***. This is the prove for the earliest known use of this perfin. The Chairman of the “Kommissionen for Skovfogedelevers Uddannelse” Johannes Helms was located nearby Skive in Feldborg.