Yeah, it's a Titan but can't say whether it was made in Germany or the U.S., I assumed they were all German. Based on what you say, it probably is one of the American prototypes, especially with the X serial #. I'll try to get a buddy to take a picture of it and post it for me, I'm a computer moron myself.The blueing looks fine but it looks like the serial # was engraved, blued over and then engraved over again, slightly off from the first stamping. I've always liked the Titan action and last year picked up a Mauser 99 9.3x64 that matches up nicely with the .411. BTW, I like your choice of getting your KDF in .308 Norma. One of my favorites as well. I have a Parker-Hale Mauser in it that shoots like a dream.

Regards,

GunNut