Chris, I think the rod was probably built by Harnell to Fispo specs.
Everything about the rod matchess Harnell 440R, except it's 2-piece instead of 1-.
All the hardware looks Harnell.
I still haven't found who Fispo may be, other than random links to tackle boxes containing Fispo-Griilon fishing line spools or Fispo carded snelled flies. (Grilon turns up a Zurich-based plastics company)
also the OS packaged copper spoon in this tackle box is marked Fispo
and another 2-pc Fispo Harnell spinning rod with case
the listing describes the classic Harnell red wraps
but it almost certainly represents a retail merchant or regional distributor.
One forum that posted now defunct ebay links show a couple other Fispo glass rod ebay auctions - of course those links and photos are gone. I'll keep looking...
I didn't photo these myself, but here are the seller's photos of the spiral transfer on the rod, which I cropped out to camera resolution
Don't know how this lead may pan out, but Fispo has Finnish references, and the 2020 UK Normark Rapala catalog has a Ragot saltwater soft plastic fry-size jig identified as Fispo Hegene - neither word translates, though the latter is used in a range of saltwater soft jig lures. https://issuu.com/normarkuk/docs/low_res_-_consumer/370
though there was this quote from a defunct ebay listing: FISPO Powr Kast | Early European Fiberglass Rod w. Travel Case | 6ft - 72 inches. By Ebay USA in forum Vintage fly rods.
Is Fispo a Finnish brand that bought Harnell blanks or completed rods?
There's also a current reference to a Japanese fishing line supplier in Angling International magazine