They can therefore be found both postally and fiscally used. These are quite scarce today, with valuations from US$700 to $10,000 for postally used examples. Due to this, fiscally used stamps tend to be cheaper than postally used ones. They were never meant to be postally sent. The unoverprinted 1899 stamp was therefore used both postally and fiscally after 1913. Genuine postally used material also has been produced for collectors. Postally used stamps usually have no gum and these terms do not apply. Later stamps are identified by overprints even when not postally used. Many modern stamp issues are hard to find genuinely postally used. Other Soviet stamps overprinted with similar designs are not believed to have been postally valid. In 1912, the archipelago was administratively and postally united to the colony of Madagascar. The Orange Free State revenues were also postally used. All of the surviving examples of the India 1854 (inverted head) are postally used. Thus Alva, despite being in the Central Region after 1975, was still postally in Clackmannanshire.