Is your coin door open? If it is, you can take it off the main door and take the coin door to a locksmith...they can make a key for you...I did this once and it worked out great. It was $30 and it didn't take him very long. You might take some of your other coke keys with you as a reference.
Great idea.  I'm going to try this.  Thanks for the tip!   If no one here has one I'm thinking the 741 may not exist.