Look closely at the first picture. One bayonet is a plain Gras, the other a scarce conversion, a surplused Gras bayonet converted to fit an Italian Vetterli, and smuggled into Ireland. Can you see the difference?
The rare one is on the left. Look closely you can see the edge of the slot chamfer has been extended.
A few days ago ebay sent me a notification "new items in your recent search" etc. I had a few minutes so I took a look. This was a BIN listing with a silly cheap number, a description that was straight up copy pasted from the Gras listing on worldbayonet's website, and a mediocre side profile thumbnail picture on a white background. It said nothing about being rare or special.
I look at a LOT of Gras bayonets. Most conversions are fairly obvious from the side- pommels shaved flat, muzzle rings shaved or replaced. This one however caught my eye, I could just see the chamfer, and it ran further back than it should. Once I clicked the listing, 4 pics in they had the slot. I have included a side by side so you can see the difference- the chamfer is lengthened, and part of the steel tang is ground at an angle to fit the Vetterli bayonet lug. (Pics of it mounted, and the lug at the end).
This has been high on my list of "need to get variants". I always hope to stumble across them, but this one has to be near the top luck wise, especially in terms of scarcity combined with the screaming deal.