If you are near London you can have mine. It has an intermittent fault where the red colour does not show. It is probably a very simple thing to fix and it has been like that for the last three years. I haven't opened it to see.
Anyway you can have it free if you are willing to collect. It is a 1438S. I can confirm that apart from the intermittent missing red, it works fine. It synchs correctly and there are no missing components. It is yellowed, though.
If you want it, let me know.
