Congratulations to all the graduates out there! Best wishes and success as you go forth into the world. This week, we’re looking at 19th Century patents in the field of finance. (Let me know if you figure out the last one; it's...interesting...)

https://patents.google.com/

US 458,400 REGISTERING MONEY BOX US 555,230 FINANCIAL INSTRUMENT FOR USE OF BANKERS &C. US 571,613 DEVICE FOR DEMONSTRATING FINANCIAL PROBLEMS