The coins and Currency that were around for the lumberjacks was very different from the money we have today.  Mainly it just looked a lot different, but it also was used differently than we use ours.  Every lumber company had a different system of currency that it used for lumber and merchandise.  But you could only use that currency in that company's stores.   Other companies wouldn't accept it.    You would think that there couldn't be too many different lumbering companies.....but there were.  And because of there being so many companies...it was hard to make a currency all your own!