It's been exactly 5 years since I bought this keyboard secondhand. It cost me a lot of money, but I liked it, and it immediately became my fav keyboard and daily driver. Always kept dry and never spilled anything on it. Today I discovered that despite my careful handling, it started to rust!
Do all Topre keyboards suffer from this issue? Could you check yours or maybe provide some photos for comparison?
(These tiny spots are not dirt. It's oxidation.)