Coolest Goodwill find so far

My friend's dad bought this antique State Bank safe from a Missouri Goodwill for like $4. After we figured out the combination which was 8 to our surprise it had a note inside of it, the Note had a few names on it, it said $17.00, & The dates on the Note were January 13, 1906; followed by 1908 1911 and 1914. The safe itself is only 4 inches tall, so cool, what a find!