So my grandfather-in-law gifted this rather nice saber to me today, and while I did find other examples of its type on the internet I have not been able to identify the maker's mark. It's, sadly, only partially present on the ricasso.

If anyone is interested in measurements:
Overall Length: 91 cm (35.8 in)
Blade Length: 77cm (30.3 in)
Center of Gravity: 17cm from the hilt
Total weight: 954g (2.1 lbs)

No scabbard.

It is unsharpened and due to the presently very rough grind I think that it would end up a noticeable amount lighter and more nimble if sharpened. The assembly is 100% solid. It may have a miniscule bend in the blade, but it's hard to make out with the naked eye.

The only discernible features on the ricasso are:

*UUN* (?)
WIEN (Vienna)
** [crest] 15

the asterisks represent unknown letters or numbers.

If anyone is an expert on Austro-Hungarian sidearms of WW1 I'd be interested to learn whose maker's mark this might be.

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Maker's Mark and probably date?

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Overview (blurry, but not that important) [ Download ]

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Hilt right side, shagreen in quite good condition [ Download ]

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Hilt left side, shagreen in quite good condition [ Download ]

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Spearpoint [ Download ]

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D-Guard style knucklebow [ Download ]

It might be "JUNG", preceded by one or two initials. There were several Jungs, producing all sorts of things from Swiss and Austrian sabers to Enfield bayonets; I assume they were all related and business partners, too, because they all seem to have used the same mark, identical apart from their first and second initials. :)

Thank you, that seems quite plausible.
The resource I've found (http://www.hungariae.com/Markings.htm) has an entry for [ 'Jung' = E.S. Jung bayonet maker ], which I possibly overlooked due to looking for capitalisation and being somewhat stuck on the double U.

I have a friend in my HEMA club who occasionally deals in antiques, I'm curious to see what he thinks of this one.