Not sure if this is the right place to post this but I put that 4 panel onionskin 1.5 in on ebay lastnight here is the link
http://cgi.ebay.com/Vintage-German-Onionskin-4-panel-Marble-Approx-1-5-/270602456921?cmd=ViewItem&pt=Marbles&hash=item3f0129cf59
http://cgi.ebay.com/Vintage-German-Onionskin-4-panel-Marble-Approx-1-5-/270602456921?cmd=ViewItem&pt=Marbles&hash=item3f0129cf59