Sorry, I missed this thread earlier some how!
With sights, I would suspect it to be a 20" Superlight, is that what it is? If the second letter is L, it's too old to have any high pressure barrels fitted to it, sounds a little high for a Handi to me, unless it's walnut instead of pallet wood. Normally they have either laminated or walnut stocks which make em more popular, they would be whether they had the medallion or not tho, IMO.
Tim