This reasonably sophisticated copy is a Hungarian fake from the early years of the 21st century. The prongs are more or less the correct shape, but there are other features which give the game away, so caveat emptor with this one!
If you want to comment on this item—re quality, age, etc—please email me.
My Arisaka arrived at 9.00am. Very prompt delivery and excellent packaging! The blade is superb.. and just what I was after, its in very fine condition and just as you described.. I've referenced it in my copy of Raymond La Bar's book "Bayonets of Japan".
Many thanks, Chris, once again its been a pleasure doing business!
S A, UK, 14.08.2012
Just to tell you that the bayo arrived today and I'm very pleased with it.