Although I did try to find answers on this matter before did I stumble today over a interesting post on the site 'coins-auctioned'. Interesting enough to citate some parts of the post and share it here: It takes a lot of time and lessens the metal content of the coin and its value, so why were these ancient coins holed? Sometimes Roman and Greek coins were used as decorations by both males and females. Ancient people through the ages also used holed coins to nail them to a door or wall. This ritual is to praise the ruler or the God illustrated on them or in hope of gaining protection from the ruler or ancient god. Many holed coins have been used as decorations or as a souvenir. Some may have been purposely defaced. In some cases, holed coins with lower value may have been used simply as piece of metal. The following are types of Holed Coins. Several late Roman bronze coins have multiple holes. One significant theory is that armoured soldiers may have threaded them onto their weapon, where they can provide a mixture of decoration and extra protection. Their value as currency was low, so this is feasible. Silver Antoninanus of Severina composed of two different holes. This is a stylish choice of jewellery. It consisted of two smaller holes at opposite ends of the coin. It could have been put together with other coins to form necklaces. Certainly, two holes would not be enough for a simple pendant. Some coins demonstrate a hole which has not been passed through. One of the best examples is the Centenionalis of Constantius II. This Corinth has holes found on both sides. There’s no proof being revealed, but they do have a split attempt. They are in various positions, so the hole-borer could not have accepted them to fasten together. There is usually some roughness and sometimes abnormality on the shape of the hole, sometimes by the warp of the metal around it. There may be an indication of a slight flaw of workmanship. Bronze coins were drilled the most because of their cheaper value but gold and silver ones were also drilled by more wealthy individuals. Most of the ancient coins have been restored by plugging the hole. The plug is typically the same metal as the coin. Fixes are most common in the most precious coins such as gold coins with plugged holes. Another popular use of coins was in decoration on clothing or leather bags. Ancient Roman soldiers used holed coins in their uniforms and another use has been in leather bags where the coin would not be holed but would have a plug soldered to the coin and a hole inserted to add to a leather item. In Africa they would add a slug to a leather bag and hammer the end flat to make the coin fix permanently. I was thinking about the huge presence of wholes in Marc Antony's Fleet coinage, this was a good way to keep them save on your body. What about a Trachtenbelt, beautiful and great for a visit to the 'Bierfest' or just during the first date to display great honor to your German heritage? Perhaps not always a great idea for a first date.... second or third? Enough challenges to make a study of it, was thinking of the appropriate latin name for studying holes in coins, what about numismaforminisologia? A collector of holed coins, is that perhaps a numismaforminiscollector?