Irwin bit set

[john k]

Have had this Irwin bit display for some time.  This week began sorting through boxes and bags of  bits that have come my way.  The holder came with 2 rusty bits,  wanted to see if there was enough to fill it.  In 2 hours of digging, was minus the 9/16 and 15/16 .  Then remembered a canvas tool roll I stashed away.  Found 5 more pristine Irwins, which I swapped out the rusty stuff.  All  matching bits now save for a real common size in the middle.   Not researched the age, but the prices make me think early 60s.   Any ideas as to age, or any more out there?

[OilyRascal]

Hardware store display?  I have seen many more in rolls and in wooden boxes than this hanging display.