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Edge Serration Count on UK Gold Guineas

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As a natural progression of our project to count the edge serrations on gold sovereigns, following on from Krugerrands, we just did our first Edge Serration Count on a UK Gold Guinea:


As you can see, the result for our 1777 guinea was 107 serrations.

Guineas have diagonal edge serrations / reed / grains / ridges, and they were mainly producing using an edge rolling device, rather than a retaining collar. This means the serration gap are not quite as regular, and could possibly vary from one coin to the next. Currently I don't know, but as we check mor coins, we will build up a better picture.

It is worth noting our photographer's comments:

"You requested that we include guineas in the serration shots.  Not easy - they are not evenly spaced and because my method works out the angle for each serration and then builds the lines around that when i do this on a guinea it looks as though I miscounted.  I triple checked the count and it is 107 (although they nearly melded into one at one point there was enough to make a calculated estimate where the serration was).  So the finished "grid" image has a look as though it could be wrong.  I doubt you want me to move them individually (maybe an hours work - they need rotating as well)  Just looking for some direction on future guineas please."

It's great to have a team member who will make sensible judgements on things like this.

More guinea serration count photos to follow in good time.





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