Slot machine booklets (and thus the panes) are the only sources for many catalog-listed stamps, including several major numbers. The booklets were often produced in lower quantities than even commemorative stamp issues; often the panes (and stamps from them) are much scarcer than other stamp issues of the time period. Unfortunately, the Scott Catalog has failed to reflect this reality.
The panes have been listed and illustrated for the convenience of collectors seeking them for their albums.
If you are seeking complete booklets, the same prices will apply (for NH) for the least costly type of the respective HA number. If you are seeking complete booklets, please be sure to add a note specifying this.