Used stamps exchanges.

Hello I received a nice lot of stamps(LV-20),but when I try to register, a message show 'this ID already exist.'
Somebody or the sender can help me? Thank you. Denis

Well actually you registered LV-20 by yourself :) http://100stamps.club/stamps/LV-20.

Perhaps you can try with LV-19, LV-21, LV-22... just to check. Sometimes members demand several adresses at once, perhaps the sender just mixed them up.

I looked over the member list and the only member that is active from Latvia is "flax600". Try sending them a message, I am sure its them.

If you click on the rankings on top and then hit members, go down to number 43 and it should be "flax600".

Hope this helps.