Signature of King Vajiravudh of Thailand, signed as "Vajiravudh Rex" in Thai language. Extract rom a letter about giving the surname "Phanomvan na Krungdeb" by the king. Tracing to svg by user:Xiengyod~commonswiki.
File:บัตรนามสกุลพระราชทาน_(เดิม).JPG
King Vajiravudh