Most professional blacksmiths forging hammers require finishing to make it fit your hand and your work. Sharp edges will need to be radius'd. This is called "Dressing" the custom forged hammers.
Furthermore many European blacksmiths would find it insulting for a hammer manufacturer to assume they know what the best radius is for the master blacksmith. For more info on this subject please read the book by Mark Aspery, Skills of a Blacksmith, Volume 1, Chapter 3.
Multi-purpose forging hammer which is designed specifically for forging
These blacksmithing hammers are not meant for use in driving punches or chisels
Always take special care of your anvil and forging hammer when working with tools steels and alloys.
For the sake of your tools and your body always know what it is before you strike it.
Many blacksmiths use a cheap hammer and cutting plate on the anvil when punch and chiseling