Here's some more detailed shots of my horn.
The butt plug is fastened with iron "nails". They are not uniform in shape and are filed flush with the horn. I checked with a magnet and they are indeed iron.
The maker used many such nails on one side and a lot less on the other.
I was able to pull the spout plug. Got a good grip with a needle nose pliers and slowly twisted back and forth. Looks like hand whittled from a branch or twig. Note the powdered wood fibers from where the plug was crushed from the pliers.
Well, I checked for "air tightness" by blowing into the horn and she leaks like a sieve. Air feels like she's blowing from the sides where the butt plug is fitted. Couldn't feel any air from around the staple which is good.
So, whatcha think? Should I attempt to seal 'er up or just let her keep settin' on the shelf. I do have some deer tallow/bee's wax mix somewhere (probably not with me at the moment).
Thanks for looking and many thanks for your input and interest.
Regards,
Johnny