Hello all. I’ve listed two nice valve amps on ebay. First is a 1959 Bird Talisman 6W combo:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=004&sspagename=STRK%3AMESE%3AIT&viewitem=&item=140086309309&rd=1&rd=1
Small and light. Voltage selector allows changes from 200 to 250V only so some places, like the US, would need a step-up transformer.

My Impact 60 is a nice British valve head. Take a look at the pics to see the excellent construction.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=004&sspagename=STRK%3AMESE%3AIT&viewitem=&item=140086318624&rd=1&rd=1