Cartridge boards are always hugely collectable
Mostly after the fact, years later. I remember Weatherby and TC making some encased in Lucite clear. Those little desk art items command four figure prices now. I need to make my own little "Reeder Ctg. board" with what I have available. You could really make several based on different classes.
GNR, have you ever thought of make some Ctg. boards for production to collectors?