Yes, tu7k it is one of my covers. I've had it a number of years, one of a pile of covers I picked up at a stamp shop.
I find this cover interesting with its unique stamp and cancel. https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTzovHWfYuHkbgKfTr8Mr02tj4z9FpiKahaje2zTpDenWpNP-Yk
1990 Marshall Islands 1st day cover Invasion of the Low Countries https://www.facebook.com/photo.php?fbid=10201821511923279&l=675b91104b
The stamps on this cover are so nice! http://4.bp.blogspot.com/_gxIOstZmY0U/TJJWH6rckXI/AAAAAAAAB3I/yl0BYCIyYXs/s1600/Kenya.JPG
Cover with very interesting Canadian stamps. http://3.bp.blogspot.com/_gxIOstZmY0U/TIPe_S3wCHI/AAAAAAAAB2Q/_2Dq6hjx1Sk/s1600/Canada+%28Tristan%29.JPG
A cover from Saint-Pierre & Miquelon that I found online. http://1.bp.blogspot.com/_gxIOstZmY0U/TKJHpJykU-I/AAAAAAAAB3g/vtkbtSA8qfY/s1600/SPM.JPG
A Ukraine cover, so beautiful print and stamp. http://1.bp.blogspot.com/_gxIOstZmY0U/S6-eyLB3JXI/AAAAAAAABhw/48hE9BtA1WA/s1600/Ukraine+1.JPG
A FDC cover from the Philippines featuring endangered birds. http://1.bp.blogspot.com/_gxIOstZmY0U/S13xwnbv41I/AAAAAAAABZI/yVKjW7msWFc/s320/Philippines+%28FDC%29.JPG
Love birds more with these covers. http://2.bp.blogspot.com/_gxIOstZmY0U/S41c8iYEuFI/AAAAAAAABgY/AnSMLG1xiMQ/s320/WWF+Aland.JPG
A cover from Albania for today. http://2.bp.blogspot.com/_gxIOstZmY0U/S89JmfIHKBI/AAAAAAAABiw/3GhVmrIAdRw/s320/Albania.JPG
Hello, just to show you some "simple" envelopes during the inflation in germany, my "cover of the day" is a letter with "normal definitives" and "official stamps" from 1923 (not the best condition, but those "mixed" covers are really hard to find) [sharedmedia=gallery:images:388] Well ... nothing special ... but look at the back of the envelope [sharedmedia=gallery:images:387] At all, the value of the Stamps is 2.800.000 Mark Could you imagine to get such covers nowadays? Regards Sven