I was told Italian and don't know the supplier Oldtimer. They where treated before I got them. The original package did not make it the next season. I did take an early July split with queen cells off of it that did over winter. Queens are open mated with whatever is local. Two of these colonies are heading into their 2nd winter and the other 2 their first. How things will look in the spring only time will tell. The trend has been that the older colonies don't make it but I am hopeful they will this year as they look very healthy at this time. I haven't been able to say this about the earlier second year colonies from this group up until now.
Interested Delta Bay, that the bees you got from NZ have not been treated in 3 years. Are they still NZ descended queens? If so what strain are they, and if you can remember, who was the supplier?