but the design of the invention permits it to be furnished if desired the display panel is held in its upright position by fitting the bottom or free edge 52 of the outer top panel flap 32 in the slit 44 in the side panel 18 at the back of the carton thus as shown in fig6 the edge 52 is secured in the slit between the back side panel 18 and the small tab 54 formed by the surrounding slit the location of the score line 42 need not be limited to the position shown this can be varied depending upon the location of the slit 44 and the length of the top panel also although the arrangement shown is preferred because of the ability to provide a vertical projection on the display panel it is possible to reverse the overlap so that the top panel flap 32 can be the inner top panel flap instead of the outer top panel flap as illustrated it should now be understood that the invention provides a simple carton design which allows relatively thin economical paperboard to be used yet results in a carton strong enough to function as a shipping carton further the same carton also converts quite easily to an attractive functional display carton which displays the contents of the carton and at the same time presents a display panel at the back of the carton although the embodiment of the invention disclosed is directed to a display carton designed to ship and display golf ball packets obviously the main principles of the invention could be incorporated in cartons for shipping and displaying other types of products as well it can also be understood from the foregoing that in addition to the modifications discussed above it is.