NLF Overprints - Genuine The two stamps in the upper row are marked with an "X" but were not surcharged with a new value. These were purchased directly from Cotevina in Hanoi. The third stamp was surcharged 10d. < Home | < NLF Overprint Index For more information about this project, or to contribute material and information, contact Joe Cartafalsa at joeresearch@shtc.net.