I saw one on eBay the other day, and I can't find it now. I think it was a vintage Burnham or some English pen.
The seller said it 'has a short nib'.
Scroll down to the pictures and... damn right it was short! Both the tines were missing, leaving a stubby sort of semi-circle. :S
Oh, on a slightly different note, I stumbled across this English eBay seller selling excellent condition vintage English pens - I'm not advertising them or anything, I just wish all eBay sellers would photograph their items like this:
http://cgi.ebay.co.uk/Marbled-Blue-Purple-...1QQcmdZViewItemIsn't it wonderful for a change?? I'm sick of looking at tiny blurry images of an ill-lit black pen with half a nib...