Category

• Philately (195)
• Picture Postcards (5)
• Documents (2)
• Advertising, Promotion & Propaganda (1)

Country

• Turkey & Ottoman Empire / Türkiye & Osmanlı İmparatorluğu (203)

Attribute

• Philately (Postal History) (194)
• Philately (Postal Stationery) (49)
• Philately (Stamps) (45)
• Philately (Stamps - Local Issues) (27)
• Picture Postcards (publishers, photographers, printers) (23)
• Philately (Other Stamps) (3)
• Documents (2)

Historical

• 1299-1918 Ottoman Empire (203)

Geographical

• Vilayet of Constantinople (66)
• Vilayet of Aidin (37)
• Region of Aegean Sea (25)
• Vilayet of Andrinople (Thrace / Θράκη) (23)
• Region of Marmara (20)
• Vilayet of Adana (19)
• Vilayet of Trebizonde / Πόντος (19)
• Region of Black Sea / Πόντος (13)
• Region of Mediterranean Sea (11)
• Vilayet of Salonica (10)
• Vilayet of the Archipelago / Aegean Islands / Νησιά Αιγαίου (10)
• Vilayet of Beirut (7)
• Vilayet of Bursa (Hüdavendigâr) (5)
• Region of Central Anatolia (3)
• Vilayet of Baghdad (3)
• Vilayet of Monastir (3)
• Vilayet of Syria (3)
• Vilayet of Konya (2)
• Vilayet of Aleppo (1)
• Vilayet of Danube (1)
• Vilayet of Kastamonu / Πόντος (1)

Topic

• Hellenism (49)
• Ships & Boats (30)
• Military & War (26)
• Trains & Railway (8)
• Medicine (5)
• Religion, Churches (4)
• Royalty (4)
• Rivers ( Falls etc ) (3)
• Bridges (2)
• Education & Schools (2)
• Judaica (2)
• Olympics & Sports (1)

Kind of Item(s)

• Postal Items (203)
• Postcard (63)
• Postal Stationery (41)
• Envelope (Commercial or Private) (37)
• Entire Folded Letter (25)
• Loose Stamp(s) (25)
• Corner Cover (Printed or Illustrated) (10)
• Cover of Folded Letter (8)
• Fragment (8)
• Money Order (4)
• Post's Document (4)
• Wrapper (3)
• Front or back only (2)
• Postal cards (2)
• Letter Card (1)
• Newspapers & Gazettes (1)
• Telegram (1)