From: michaelbradley171@nospambtopenworld.com   
      
   There are also little machines called watermark detectors but in my honest   
   opinion, these are not as good as lighter fliud.   
   Cheekycharlie   
   "Gandalph"  wrote in message   
   news:1NCcnRn1LsavRyHcSa8jmA@karoo.co.uk...   
   > Sorry for what may be a dumb question but I know nothing about stamp   
   > collecting, and to be honest I find the subject as dull as ditch water.   
   > However my dad knows I use Usenet and he asked me to find the answer to   
   > this   
   > question for him.   
   >   
   > He tells me he used to use Benzene to make the watermarks in stamps show   
   > up   
   > more easily. I know from my A-level chemistry that Benzene is highly   
   > carcinogenic and is now banned from sale to the public. What he wants to   
   > know is if there is any other substance that is safe/legality available   
   > that   
   > will do the same thing.   
   >   
   > Thanks,   
   > David.   
   >   
   >   
   > --   
   > Replace the fake email address with the correct one if you want to reply   
   > privately.   
   >   
   >   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)