[madbadgalaxyman (Robert)]

Good observation of IC 4329A, Paddy!

It seems to me that you are plainly seeing the stellar-like Active Galactic Nucleus of this galaxy; the edge-on disk galaxy IC 4329A has a very very luminous Seyfert Nucleus; one of the most prominent of these objects which are accessible to the amateur telescope.

Here is a picture of IC4329 and IC 4329A:



(this is an I band (800nm) image, displayed at a log scale so as to show both the central parts and the outer parts of these galaxies)

Here is a closeup of IC 4329A:


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The central feature in IC 4329(a big elliptical galaxy), is also very bright;
as you perceptively remarked in your observing notes.
This is not a star-like central feature; so one wonders if it might be distinct from the rest of its host galaxy..... in terms of its structure, the ages of its stars, its rotational properties, and the orbital structures of its constituent stars.

The Hubble Classification of IC 4329 is 'probably an elliptical galaxy', but the vast distended envelope visible in photographs looks a bit like it might have disky characteristics; so if IC 4329 were a two-component "disk+bulge" system, it would be classified as Hubble type S0.

Of late, I have been leaning towards assigning IC 4329 to the S0 morphological class, albeit a "very mild S0 morphology"

P.S.
"The Seashell" must be one of the toughest challenges for visual observers.