WORLDWIDE means stamps sorted and mounted by country, rather than by topic.
Stamps are currently required from all countries. Better items are needed, but medium value material is more than welcome, especially from more unusual countries. However, all countries are welcome. Also in demand are older stamps - there are customers who cut-off collecting in the years 1900, 1935, 1950, 1990 and 1994 and stamps mounted so that they are all before those years are very welcome. Postally used material is also very much in demand, from all eras. Older MNH complete sets from all countries are also highly sought.
My worldwide stock is currently very strong in Poland and Russia but better, older and more unusual items from these countries are very welcome.