1960 Half-penny slight rotation/upset

[Noelos237]

I have noticed a minor upset on all 4 of my 1960 Half-pennies. Can anyone confirm this? Is there a reference list of all known pre-decimal upsets among other errors?

[Mister T]

I don't have any at hand but a lot predecimals have minor upsets I think. Possibly orientation was done by eye in the early days?

[gnome]

How minor would you say they would be.

[Noelos237]

How minor would you say they would be.

[gnome]

Ok thanks,

[r9453]

Doesn't look like much, how many degrees is that?

[keldaw]

TO ME , IT LOOKS LIKE NO DEGREES AT ALL .

[trout]

I would say that it is well within tolerance, It takes a fair bit of rotation to become interesting But Well spotted though :good:

[Noelos237]

I would say that it is well within tolerance, It takes a fair bit of rotation to become interesting But Well spotted though :good:

Noted.

[enworb]

This is very common on pre-decimals. Not much interest in slight rotations.

[Goldseeker]

When the RAM production floo r was opened to the public some years ago, several of the defunct Secret Squirel coin forum visited Canberra for a dinner and RAM inspection.

During this inspection, I was informed that the tolerance of the head/tails was within +-15 degrees.

It is possible that this applied to pre decimal coins as well.

[robbiegal]

I have heard tales of that coin forum


that +-15 degrees  tolerance sounds fairly right

we see a lot of coins sitting within those degrees of rotation

and many others outside of that - so this 1960 halfpenny could be the start of a full rotation set in years to come

[Mister T]

I'd heard 5% mentioned before, but yeah, it's got to big to be appreciable.