![My grandpa's Seiko [SQ 4004] , it wasn´t used since about 20 years. Is it worth to make a service or should I simply change battery and try to get the scratches My grandpa's Seiko [SQ 4004] , it wasn´t used since about 20 years. Is it worth to make a service or should I simply change battery and try to get the scratches](https://preview.redd.it/112mrvumyof61.jpg?width=640&crop=smart&auto=webp&s=4ee30f514c1f2b693459ca1c446b5cfde1bbc399)
My grandpa's Seiko [SQ 4004] , it wasn´t used since about 20 years. Is it worth to make a service or should I simply change battery and try to get the scratches
![Rare 1975 Seiko Quartz SQ 4004 / Scratched Up Crystal & New Working Battery, Luxury, Watches on Carousell Rare 1975 Seiko Quartz SQ 4004 / Scratched Up Crystal & New Working Battery, Luxury, Watches on Carousell](https://media.karousell.com/media/photos/products/2022/1/10/1975_seiko_quartz_sq_4004__scr_1641811006_60974d2e.jpg)
Rare 1975 Seiko Quartz SQ 4004 / Scratched Up Crystal & New Working Battery, Luxury, Watches on Carousell
![Help needed Seiko 4004 [4004] [0903-8159]. Friend of mine personally bought in 1977. Intermittently runs after new battery. Searching for a video of movement breakdown and cleaning. : r/Seiko Help needed Seiko 4004 [4004] [0903-8159]. Friend of mine personally bought in 1977. Intermittently runs after new battery. Searching for a video of movement breakdown and cleaning. : r/Seiko](https://preview.redd.it/l9lh23t520o61.jpg?width=640&crop=smart&auto=webp&s=c5c27e3ba88c1a3751d2439fafc1cf5c9755b8b8)