I'm looking for perfin collectors who want to swap some duplicates. I successfully exchanged thousands of stamps with collectors in Canada, Australia, France, Sweden, Germany, and Austria so far.
If you are interested, just drop me a line, tell me the countries you're interested in - or catalog numbers/missing lists - and I'll try my best to find something for you.
I collect worldwide (main focus Austria), but I don't swap GB as my collection of English perfins is still "under construction". Colonies, Ireland are welcome of course.
No look swaps 100/200/500 are possible as well.
And I got some covers, too.
The picture shows a little glimpse of how my Austrian duplicates are sorted - just as an example.