1520 (30 Oct.) fine entire letter from Valladolid to "The Magnificent Lord Messer Raffaello de Medici, in Antwerp", the reverse showing an unusual courier's endorsement "By me, Antonio Gimigiani, number 3"; an intriguing cryptic letter (possibly in some kind of code) with references to "the King" and "the Emperor". Complete with transcription and translation. A most unusual routing on such an early letter