In this book the terms token and tally mainly covers those metal objects for which there is some historical or archaeological evidence that they served either as substitutes for money in short supply, as a means of recording promised payments, possessions, work outputs or many other things which required records.
There is no universally accepted agreement on what is or is not a token, nor even a tally. The accompanying texts and illustrations serve as an introduction to each category. The recommended bibliographies should put readers on the road to expertise in all of these fascinating series.