Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 1

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 2

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 3

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 4

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 5

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 6

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 7

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 8

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 9

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 10

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 11

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 12

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 13

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 14

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 15

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 16

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 17

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 18

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 19

Thumbnail [WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet 20

Model:	Seiko Tuna	Last Scraped:	Oct. 12, 2025, 3:17 p.m.
Username:	wizard903	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

**Description**: This Seiko Tuna Save the Ocean Solar Diver SNE518P1 is in excellent condition; please see the photos to verify. This example comes with its unworn original strap and an upgraded stainless steel shroud, though the OEM plastic shroud and fitting tools are also included. The Strapcode Engineer II bracelet can be included for only $60 extra (presently sells for $80 plus tariff and shipping from China). [Timestamp.](https://imgur.com/a/timestamp-u-wizard903-r-watchexchange-pfogl3z) **Price**: $330 shipped CONUS, or $390 with Strapcode bracelet. Zelle/Venmo preferred, PayPal FF available for those with purchasing history. No trades at this time. **Miscellaneous**: I've sold many watches, including higher-end pieces, on Reddit with 100% positive feedback; please feel free to examine the details of my selling history. And feel free to send a chat with any questions! I currently have \~30 other watches for sale; please check my profile for details. All watches have been cleaned with a microfiber cloth and gentle solution.

First Posted:	4 weeks ago	# of Reposts:	5
Starting Price:	$435	Price Change:	10% lower

Hide Reposts (0)

First Posted	4 weeks ago	[WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet	$435
Price Change	3 weeks ago	[WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet	$425
Price Change	2 weeks ago	[WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet	$410
Price Change	1 week ago	[WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet	$400
Price Change	6 hours ago	[WTS] Seiko Tuna Solar Diver w/ unworn OEM strap, steel shroud, optional Strapcode Engineer bracelet	$390

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Highest:	$1,795	Lowest:	$60
Median:	$382.50	Std. Dev:	±$475.82

Estimated Private Party Value $250 — $975


	Established:	1881
	Website:	http://seikousa.com/index.php
	Country of Origin:	Japan

The company was founded in 1881, when Kintarō Hattori opened a watch and jewelry shop called "K. Hattori" (服部時計店 Hattori Tokeiten?) in the Ginza area of Tokyo, Japan. Eleven years later, in 1892, he began to produce clocks under the name Seikosha (精工舎 Seikōsha?), meaning roughly "House of Exquisite Workmanship". According to Seiko's official company history, titled "A Journey In Time: The Remarkable Story of Seiko" (2003), Seiko is a Japanese word meaning "exquisite" or "success" ("exquisite" is usually written 精巧 from Chinese jīngqiǎo, while the meaning "success" is usually written 成功 from Chinese chénggōng).

Seiko is perhaps best known for its wristwatches, all of which were at one time produced entirely in-house. This includes not only major items such as microgears, motors, hands, crystal oscillators, batteries, sensors, LCDs but also minor items such as the oils used in lubricating the watches and the luminous compounds used on the hands and the dials.

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