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Recently, I inherited two Seiko divers from my grandfather. A beautiful 7548 that I instantly fell in love with and a 6309. Both are in great condition disregarding some major scratches on the back of the 7548 and some minor scratches on the side of the 6309. The 6309 came without the original hand and currently rests on what can only be described as a subpar-substitute. The 7548 had its original band, but I replaced it with a third-party band in the new curvy style. I also replaced the battery and gaskets on the 7548 and had the movement serviced.
I've done a LOT of research and concluded that they were both made in Suwa, Japan in March of 1985. While neither have the coveted blue Saturday, the 7548 does feature hacking for easy synchronization and the Suwa logo on the dial. There are however a few mysteries I have yet to solve such as:
? What grade stainless steel was used to construct the cases?
? Can the scratches on the cases be buffed out and how?
? What are the respective accuracy ratings of the movements?
? Can the original rubber strap be salvaged and used on the 6309?
? Does the 7548 have a nickname such as "Turtle" or "Tuna"? (I know some people refer to it as the "Desert Storm")
? What is the best/cheapest option to get the hands, dials, and bezel resumed? Preferably with lumebrite. The original promethium used has a half life of 2.62 years so only .02% of the original luming remains.
I've done a LOT of research and concluded that they were both made in Suwa, Japan in March of 1985. While neither have the coveted blue Saturday, the 7548 does feature hacking for easy synchronization and the Suwa logo on the dial. There are however a few mysteries I have yet to solve such as:
? What grade stainless steel was used to construct the cases?
? Can the scratches on the cases be buffed out and how?
? What are the respective accuracy ratings of the movements?
? Can the original rubber strap be salvaged and used on the 6309?
? Does the 7548 have a nickname such as "Turtle" or "Tuna"? (I know some people refer to it as the "Desert Storm")
? What is the best/cheapest option to get the hands, dials, and bezel resumed? Preferably with lumebrite. The original promethium used has a half life of 2.62 years so only .02% of the original luming remains.
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