Two 4 sk. 1858 wavy-line spandrels II printing on piece from 'Inside franking'. Letters or applications handed in to the Local Customs office for the administration, had to be franked by the public for the letter appropriate weight scale, in order for the public not to enjoy free postage. This letter will therefore have weighed between 15 and 30 grams, 2x 4 sk. letter rate postage.