The first re-entry is 51ii. I have some nice copies of this one including a position block. It is stamp #82 but the plate is unknown.
The 1c stamp was printed from two plates. I am sharing the discovery copy it was used to illustrate this re-entry in Unitrade Catalogue. Ralph Trimble used images of several of my stamps to illustrate re-entries in Unitrade with my permission.
Re-entry 51ii (Plate pos. 82):


Note small dot in A, Slight doubling in Crown and POST.
Re-entry 51iii:


Note doubling in DA and PO and slight doubling in crown.
I do not have 51iv yet. Still Looking for it.