Originally posted by Not a Number The Progam Plus I inherited from my sister (bought new) has a thin black fabric strap that widens from 1/2 inch to 1 inch in the center. The center has a no-slip black faux suede leather strip and the fabric side is embroidered "PENTAX" in red. Buckles are black plastic and the little collars (also black) have "PENTAX" in raised letters on one side.
The original strap for the Super Program was similar, but not identical, to what is described here for the Program Plus.
The Super Program strap was just plain black, pretty thin, with some faux suede padding on it where it hangs around your neck. The only writing was on the buckles & "little collars". This strap came with my original Super Program back in the day and that is also what any used ones I have purchased came with. A well-used one would not be great strap today, as it can get kind of stiff (probably from sweat).
You can sort of see it in this photo from another Super Program thread (posted by lawsonstone):
It's possible that another strap was available outside the US or in special kits, but it seems like that plain black strap was also used for other Pentaxes around the same time, as mentioned by someone else.
---------- Post added 04-25-18 at 12:47 PM ----------
OK, checking around, I also have some that came with the type of strap with the red "Pentax" on it.