I have one Great Britain coin, 1928 Penny. The obverse and reverse are in line with each other, as in when you flip the coin on the horizontal axis, the reverse is upside down. Is this a mint error, or are all Great Britain coins in this fashion?
GB always mints their coins in what we (here in the US) refer to as 'medal turn' meaning if you rotate the coin on the horizontal axis the obverse and reverse devices are in the same orientation...........
Whereas in Canada they used a mix of rotations for many years, so it pays to have a copy of Charleston (basically their Red book) to see what issues have what rotation.
This is something that I notice when I am scanning coins to sell. When I flip them over to do the other side, about half of the coins need to be turned 180 degrees and the other half don't. Most of the British Commonwealth countries don't seem to rotate. A strange one I observed recently was a certain Mexican denomination. I want to say it was the 50 centavos from the early 1980s. What was weird was that all the coins in that style were not rotated, whereas every other Mexican coin is.