A good indicator for a true 1854/3 is the hair detail ,the ones i have seen have all been struck with not much hair from an old 1853 OBV die.
If a coin has all the hair in a condition of VF or better from what i have seen it wont be one.
The Alderley coin which i have seen in hand had good lustre and a really good example was graded As Struck in the catalogue ,reason being it was so weak to the OBV.
So as daft as it sounds to find a really good one means you are looking for a really bad one to the OBV 😃
Looking at the hair means you can quickly discount the majority if your not sure looking at the date in pictures.
Lots of 1854/3 are miss described IMO as are the 1858/2 & 1858/3 as regardless of what people think they are , they are both different coins.
Only the coin with a die crack through the date is thought to be over a 2 and has a different font than the other.