oculus

FROM OCULUS:on my shillings; I meant rotating a modern coin about a vertical axis gives us the same aspect obverse and reverse,but many early coins need to be rotated about a horizontal axis to obtain the correct aspect. I have just compared my George 3rd shilling 1816 with my George 3rd sixpence 1816. The symmetry is the same on both coins when rotating the coins about a vertical axis.So I think they are both genuine. However my George 4th shilling 1826 has to be rotated about a horizontal axis to get the correct aspect. The only early silver Victorian coin I have is an 1840 groat and that is symmetrical about the vertical like the later coins. So my question is when did it become habitual to mint coins with symmetry about the vertical as we still have on modern coins? I have not come across the answer in the coin literature,

I have acquired a George 3rd 1816 shilling in very good condition, but I wondered if the symmetry between the two sides should be vertical rotation symmetry or horizontal? Mine is vertical, but a George 4th shilling I have is horizontal. So could I have acquired a forgery?