From: twillers@sysmatrix.net   
      
   I'm very much a novice when it comes to stamps, and stamp collecting. I   
   have a question about cover (envelope) sizes. My father had a Scott   
   stamp book that was from the late 1930's. Among the stamps there were   
   two canceled Airmail covers dated May 31, 1930. They are both Scott UC1,   
   and I can easily see the watermark 28 on one of envelopes. My problem is   
   I can't figure out which size envelope I have. The 2005, "Scott   
   Specialized Catalogue" makes reference to three different size envelopes   
   (#5, #8, and #13). Thinking logically, I would think the #5 is the   
   smallest and #13 would be the largest. From what I can tell from the   
   Web, logic is thrown out the window. I can not find any definitive   
   information about the dimensions of the envelopes, or how the sizes are   
   determined. From pictures I have found from various online auctions, it   
   appears that the size 5, and size 13 are the same size. It seems the   
   size 8 is longer then the others. Is there a place that gives this type   
   of information. Any help in this matter will be greatly appreciated.   
      
                                Regards, twillers   
      
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