You can contact me under the following email address: pierres.collection (at)

Just replace the (at) by the corresponding @-symbol. Any comments about my site, additional hints about machines are welcome. If you have a classic computer you want to give into good heands, please do not hesitate to contact me, too. I can help in finding a new home for it by getting you into contact with other enthousiasts, in case a particular system does not match my interests. I live in Germany in Bonn and I am willing to drive hundreds of kilometers depending on the historical computers and peripherals of interest.