Commonwealth half penny.

[Gaz T]

Has anyone come across the half penny having six strings to the harp. 
I believe it should only have five, the strings are also very thick possibly a double strike but looking at the rest of the harp I’m not so sure. 

[Gaz T]

[absence of uniformity]

Marked by the red lines are areas of the sheild and harp that appear to be doubled.

Is this the cause of an apparent 6th string I'm not sure maybe?

[Coinery]

Hey, Gaz,

I did take a look at my own example but, even under the loupe this morning, I couldn’t confirm the number of strings on mine, due to strike weakness.

There is this post…

  …where Rob’s and Jelida’s examples show 5 strings. I did notice however that Coys’ Penny, shown in the same thread, displays a harp with six strings. I can’t imagine that the 1d harp punch hasn’t at some point been shared across the denominations?

[Coinery]

Having said that, the strings are likely added separately from the harp punch itself, so anything is possible I guess?