Seiko Animal Backcover series.

 

1. Seiko "Turtle" (Sea Turtle Logo)

• Description: Vintage Seiko Diver’s watches (like the 6309 series) are nicknamed "Turtle" for their cushion-shaped case, but some also have a sea turtle logo engraved on the caseback.
• Search term for images: "Seiko 6309 turtle caseback logo"

2. Seiko Diver’s (Wave/Sea Horse/Dolphin Logo)

• Description: Many vintage Seiko divers feature the "Tsunami Wave" logo (a stylized wave), while some older models have a dolphin or seahorse.
• Search term for images: "Seiko tsunami wave caseback", "Seiko dolphin caseback", "Seiko seahorse caseback"

3. King Seiko (Lion Logo)

• Description: King Seiko models often have a lion medallion on the caseback, symbolizing high quality.
• Search term for images: "King Seiko lion caseback"

4. Grand Seiko (Lion Logo)

• Description: Grand Seiko watches are famous for their gold lion medallion casebacks, representing the brand’s pursuit of excellence.
• Search term for images: "Grand Seiko lion caseback"

5. Seiko Crown (Dolphin Logo)

• Description: Early Seiko Crown models sometimes feature a dolphin logo, especially on water-resistant models.
• Search term for images: "Seiko Crown dolphin caseback"

6. Seiko SilverWave (Wave or Dolphin Logo)

• Description: The SilverWave, Seiko’s first dive watch, features a wave or dolphin logo on the caseback.
• Search term for images: "Seiko SilverWave caseback"

7. Seiko Sportsmatic (Dolphin Logo)

• Description: Early Sportsmatic models, especially waterproof versions, often have a dolphin logo.
• Search term for images: "Seiko Sportsmatic dolphin caseback"

8. Seiko Seahorse (Seahorse Logo)

• Description: Some vintage Seiko watches have a seahorse logo, less common but still collectible.
• Search term for images: "Seiko seahorse caseback"