Looks new to my sore eyes. Noticed that the shop is located in Hiroshima. Nothing looks odd but then the 110 China fakes are numerous if you search the China vendors, which I did to some small extent. However, I did not find that double dash tang stamp. An ambitious fella might search tirelessly the China vendors for a double dash 110 just to be sure that such a fake does exist or does not exist.
The double dash was the common tang stamp for 1992. The single dash was the rare one. The 2nd dash noted an engineering change, blade radius changed a tiny bit.
BTW, I gave the vendor a pull. If they respond with anything interesting I'll report back here. I've never met a Japanese liar. The Japanese that I have known and worked with were terrific, hard-working, wonderful, fun loving, intelligent, clever close traders.