Otto STRANDMAN 1871–1960, Sweden Also known as: OS Signed Art Art Prices Filter Authenticity Genuine / Forgery Type All All Signatures Monograms Medium Unknown All Unknown View List / Gallery Previous / Next 1898 Signature considered genuine 1901 Signature considered genuine 1909 Signature considered genuine 1911 Signature considered genuine 1913 Signature considered genuine 1913 Signature considered genuine 1913 Signature considered genuine 1937 Signature considered genuine