Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 1

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 2

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 3

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 4

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 5

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 6

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 7

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 8

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 9

Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 10

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Thumbnail [WTS] “Deepsea Tuna” SRPC93 Seiko Mod 12

Model:	Seiko Tuna	Last Scraped:	Oct. 17, 2025, 3:47 a.m.
Username:	Custom_Chrono	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

hello all i have a super fun mod up for sale today! this is another personal custom_chrono-designed seiko mod i wanted to do a mod with the tuna case again because it’s been quite a while, and i am really happy with how it all turned out. the dial is quite beautiful and reflects in the light very nicely! i love the blue to black gradient on it. this is a lume monster too and i included a lumed date wheel to up the lumey-ness the dimensions are 47.5mm diameter, but the kicker is the 44.5mm lug to lug! extremely wearable even on smaller wrists. it has 22mm lugs and 14.5mm thick with a domed sapphire crystal. i’ve regulated the movement quite nicely as well! i’m asking $345 shipped CONUS via USPS priority mail for this gorgeous mod. as always feel free to send me a message with any questions you may have

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Highest:	$1,795	Lowest:	$110
Median:	$375.00	Std. Dev:	±$464.55

Estimated Private Party Value $250 — $912


	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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