King of Denmark from 1906-12. LS in French, signed 'Frederick Prince Royal,' one page, 8 x 10.25, June 10, 1891. Letter to Charles I of Wurtenburg, announcing the death of Princess Wihelmina of Denmark. In part, 'This unfortunate event marks the end of the elder royal line which ruled Denmark for so many centuries.' In fine condition. RRAuction COA.
