Going to show you an extreme example of a Canada Unitrade 15v. I was at the local stamp club and my friend Jim showed me his newest find..Took pictures, so quality is not the best, but you get the idea,
Pascoe, Many people call these re-entries. It is in fact a double transfer by means of the die being rocked into the plate twice at slightly different position. There for it is re-entered into the plate. Here in the US many people use the term "double transfer". Canadian collectors prefer the term "re-entry". They still identify the same type of printing anomaly.