Mobileoil Delivery Ticket box

Got this Mobile Oil delivery ticket holder last night at Auction. Thought this was a really cool piece and got it for $7! Guess no one else saw what I did in it? It is from a local delivery service in Great Bend, Kansas, which is only about 50 miles from where I grew up. Odd that this shows up at auction in Virginia. Not sure of the date but was back when phone numbers were just 4 digits.