Hmm, I seem to be having a bit of a time representing  the Euro sign in
Ruby.

ruby -v
ruby 1.8.6 (2008-03-03 patchlevel 114) [universal-darwin9.0]
(same results on a linux box, 1.8.5 with Ruby)

symbol: ???
Decimal: 8364
hex: 20Ac
html number: €
html name: €
description: euro sign


dwright@[1061]:dwright% perl -C2 -le 'print chr(oct("20254"))'
???

dwright@[1062]:dwright%ruby -le 'puts "20254".oct.chr'
-e:1:in `chr': 8364 out of char range (RangeError)
  from -e:1

dwright@[1063]:dwright%irb
>> puts "20254".oct
8364


>> puts "20254".oct.chr
RangeError: 8364 out of char range
  from (irb):5:in `chr'
  from (irb):5

ruby -e 'puts "20Ac".hex.chr'
-e:1:in `chr': 8364 out of char range (RangeError)
  from -e:1


ruby -KU -e 'puts "20Ac".hex.chr'
-e:1:in `chr': 8364 out of char range (RangeError)
  from -e:1

ruby -KU -e '$KCODE="u";puts "20Ac".hex.chr'
-e:1:in `chr': 8364 out of char range (RangeError)
  from -e:1

 ruby -e "puts '20Ac'.hex.chr"
-e:1:in `chr': 8364 out of char range (RangeError)
  from -e:1

Here's the pound:

ruby -e 'puts "The pound:\243"'
The pound:£

ruby -e 'puts "243".oct.chr'
£
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