Antique Starrett Tape Measure - New in Box

Ok you antique tool collectors, is something you will probably never have the opportunity to buy again - A new, in-the-box Starrett retractable 16 foot metal tape measure. I found this in an out of business hardware store and grabbed it up in a hurry. The box is in great condition albeit a bit shop warn, but the tape itself is minty new. I am not a tool collector, but a tool user, so I am not exactly sure what this is worth - I'll start it out low with no reserve, and see what you guys and gals think.