1922 One Penny Reverse Question

I thought there were some possible differences between the reverse of these coins. The coin in better condition has more sea to the left and has the middle trident lower to the denticle. There is debris between the two and not sure if touching. The thumb seems shorter but again it is an old coin. Other than the denticles what should I consider for the 1927 Reverse. I only had one 1922 to compare to.