Hi Ian,
Just reading between the lines.....did your family tell your that Christopher died in Ireland and are therefore looking for a death cert to tie in with this story ??
Where did you get the year 1953 from, was this from family or just the only cert you found to match his birth year ?
Even if you do order the death cert for 1953, there would most likely be very little on it confirm whether of not he was your grandfather.
Irish Death certs for that time will just give you the person's name, where they died, what they died of, and who registered the death. So if he was in Ireland with no family, it's unlikely you will get many leads. Sometimes occupation at time of death is entered, so you could hope that it says Joiner, but again you said he went to work in a shop (or this is the family's story), so again may not get any leads from this.
Is there a chance that he actually returned to Britain too and may have died there ?
Tara