Is that one that Jan re-did the bolt handle on, when he was still with Martini Gunmakers?
One of mine has an original ZG-47 bolt handle done that way by them, I like it, but, have found a couple of longer Obie-style bolt handles and am having these installed on a couple of my other 21/22 rifles.
I still prefer the factory "round bolt" in these to any other rifle I have ever seen and the one I have is well used, pristine bore and shoots like the proverbial lazer.
To date, I have owned 8 of these superb little rifles, kept 6 as a couple had minor cosmetic issues and I have several ZGs as well. I have never seen an original 7x64B, I would do almost anything to get one of those actions to go with the ZG action I have to build a pair in 7x64B and 9,3x64B......great stuff,eh!