I found Alps key switches at a small Swedish electronic surplus seller. The resembled some switches I have seen before so I took a chance and bought some. The price was the equivalent of 2 USD for ten switches. I took a few photos in case someone could identify them: http://i.imgur.com/L5agnfc.jpg Could be interesting to know if they are used in some known machine. The part number might be 58990003 and 58990002 which was the number mentioned in the catalogue. The company selling them is Belganet Data Elektronik and their catalogue is at: http://www.bde.se/skat11_1.pdf /Mattis