That's a puzzler. Either RS cleared these in kit form or they put them together like this for some school - maybe correspondence. Neil On Mon, May 5, 2008 at 6:28 PM, Rogelio Perea <os9dude at gmail.com> wrote: > Where these sold as kits at some point in time? > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120257854560 > > Intriguing... > > -=[ Rogelio ]=-