I really don't want to go over this again, but the thread was resurrected after four years.
It is an HKL. Back when this debate was going on, it was easier to say RMK logo'ed sheaths were Johnson sheaths, as it had been forever really. No one seemed to really care, and it was easier for many collectors to have a line in the sand if you will between the manufacturers.
The crux was weather HKL had an RMK stamp. We were always told that the shop never stamped sheaths. So, the only alternative was HKL did in fact have a stamp. But, one employee who worked at the shop during the early 60's said HKL did not have a stamp, and the sheaths came from Johnson. So, this further muddied the water.
In the end, I somewhat explained this in the article from 6-7 years ago I guess. I intimated at the time that these were Heiser made sheaths. At the bottom, I wrote a little follow up in early 2015.
http://www.rmkcollector.com/the-randall-collector/a-johnson-sheath-footnote-part-iii I never really wrote part IV. I will at some time.
To the best of my knowledge, Johnson never made a lift-a-dot sheath. Heiser/HKL made only a handful of double brown button "C" sheaths like the one pictured in this thread, as the winds of change were in the works for an RMK sheath supplier.