Opinion of the US Expert in antique axes: This is your best axe. The round socket hole was used in ancient times. It was pretty much abandoned by the 12th century. This axe could date back to Viking times, but it isn't a Viking axe. I am guessing it was probably found in Germany. If that is the case it must be a German working axe which could have been used for battle if necessary. The German's were always warring with themselves, because they were basically divided along 'tribal' which became regional lines. If a common man was pressed into battle, he would have fought with his working tools. This axe would have been a good choice. If your axes were found in Germany that adds a little value because so much of what is on the market is from Eastern Europe. I would probably list this one as a 'Viking age' axe found in Germany that was for both work and battle. That same axe would have easily topped $3000 back in the old days. Ron Very easy to handle and fight because of the light weight. Length (anterior-posterior): 11 cm = 4.25 inches; Cutting blade length (superior-inferior): 8.5 cm = 3.25 inches; Diameter of the hole: 25 mm x 23 mm; Weight: 123 g = 4.3 oz. Strong attraction to the magnet. Condition: natural black stable rust all over (after touching the axe – your fingers stay clean) Provenance: from a Central European (Germany) collection.