3 Edward pennies for id

[craigy]

thanks in advance 

[craigy]

ok 4 for id, tia 

[davetmoneyer]

hi first three are all late 10c-f London and Canterbury mint the fourth is class 3g London ( note crown with downturned sidefleurs and crescent contraction marks)

[craigy]

2 hours ago, davetmoneyer said:

hi first three are all late 10c-f London and Canterbury mint the fourth is class 3g London ( note crown with downturned sidefleurs and crescent contraction marks)

if i'm honest the 3g crown looks the same as the 10 cf ones lol,    what are contraction marks on the crescent ?