Category

• Philately (264)
• Picture Postcards (5)
• Documents (2)
• Advertising, Promotion & Propaganda (1)

Country

• Turkey & Ottoman Empire / Türkiye & Osmanlı İmparatorluğu (272)

Attribute

• Philately (Postal History) (259)
• Philately (Stamps) (69)
• Philately (Postal Stationery) (60)
• Philately (Stamps - Local Issues) (33)
• Picture Postcards (publishers, photographers, printers) (25)
• Philately (Other Stamps) (3)
• Documents (2)

Historical

• 1299-1918 Ottoman Empire (203)
• War Periods & Military (48)
• 1923-... Turkish Republic (35)
• 1918-1923 Interim Period (15)

Geographical

• Vilayet of Constantinople (99)
• Vilayet of Aidin (38)
• Vilayet of Andrinople (Thrace / Θράκη) (35)
• Region of Aegean Sea (30)
• Region of Marmara (26)
• Vilayet of Adana (22)
• Vilayet of Trebizonde / Πόντος (21)
• Region of Mediterranean Sea (17)
• Region of Black Sea / Πόντος (16)
• Vilayet of Bursa (Hüdavendigâr) (11)
• Vilayet of Salonica (10)
• Vilayet of the Archipelago / Aegean Islands / Νησιά Αιγαίου (10)
• Vilayet of Beirut (8)
• Region of Central Anatolia (6)
• Vilayet of Syria (5)
• Vilayet of Konya (4)
• Vilayet of Baghdad (3)
• Vilayet of Monastir (3)
• Vilayet of Ankara (2)
• Vilayet of Aleppo (1)
• Vilayet of Danube (1)
• Vilayet of Kastamonu / Πόντος (1)

Topic

• Hellenism (57)
• Military & War (53)
• Ships & Boats (34)
• Trains & Railway (13)
• Royalty (7)
• Medicine (5)
• Religion, Churches (5)
• Bridges (4)
• Judaica (4)
• Rivers ( Falls etc ) (4)
• Education & Schools (2)
• Red Cross (2)
• Theater (2)
• Olympics & Sports (1)
• Refugees (1)

Kind of Item(s)

• Postal Items (272)
• Postcard (80)
• Envelope (Commercial or Private) (66)
• Postal Stationery (49)
• Loose Stamp(s) (28)
• Entire Folded Letter (25)
• Corner Cover (Printed or Illustrated) (18)
• Fragment (11)
• Cover of Folded Letter (8)
• Post's Document (7)
• Money Order (6)
• Wrapper (3)
• Front or back only (2)
• Letter Card (2)
• Parcel Post Forms (2)
• Postal cards (2)
• Newspapers & Gazettes (1)
• Telegram (1)