Solved Sigma 1609 Holder

I know it's very unlikely, but I'm trying it anyway.
Does anyone have a holder for the Sigma 1609 cycling computer (with cable)?
They're still available in Germany and probably elsewhere, but I couldn't find it here in Japan.
Or does anyone want sell a cycling computer around the level of the Sigma Rox 6.0?
My brother said he could get the Rox 6.0 for 10.000 Yen and ship it over from Switzerland. I might pull that option unless I can find anything here within the next few days. I still would prefer to fix my 1609, since it's actually all I need right now and it's sad to retire it only because of the holder.