Used stamps exchanges.

Hi Gerben, thanks for your stamp lot which I received today. Included quite a few damaged or mint, so good that you included some extras. Unfortunately I already had every single stamp you sent (older Spain from the 1960s and 1970s) ... such is life. Regards, Mark

Hi Gerben, just a quick message to let you know that I sent you a letter a few days ago but I think I forgot to include the reference number - AU-1053. Happy Easter, Mark