Thank you so very much for your help Curran.
I have become very appreciative in the last week of learning what I can about Japanese swords from sources as here @ Nihonto. It started by accident. Our car was going to be in the garage for service and we had to borrow my girlfriend's fathers car for a few days. Upon returning it we decided to clean the trunk of the car for him which was full of his golf gear and other miscellanea. The car had a huge trunk and while crawling in the back my girlfriend found this knife stuck in behind the back seat. She showed it to me and neither knowing anything about Japanese knives. But, we are both big fans of the old Samurai culture since Tom Cruise's movie. I saw the inscription on the "pocket knife" and decided to ask her dad to allow me to do some research on it. He told me it was given to him by his late brother and supposedly came from Japan. He had forgotten about it being in the trunk with the golf clubs and knew not more about it. Being an enthusiastic photographer with skills in close-up and product lighting, I wanted to have some good pictures. After wiping the blade with a cloth the small inscription on the handle came to light. I posted the mei on my facebook and a friend helped me with the initial interpetation, although he knows little on swords. Through Googling I found this great message board and have been reading up on much of the great information available here.
I'm not a sword collector, although I'm totally fascinated with all what I'm learning. The blade belongs to my future Father-in-law and I'm just helping him on more identification and possible appraisal. He just wants to keep it as a memory of his brother unless it ends up being worth a Cristie's auction item....LOL. Researching this blade has provided a huge education and appreciation from me on all the small nuances in Japanese culture and swordsmith craftmanship. I guess that is what this is all about, the appreciation of something simple as a little knife for what it can represent from the past and record for the present and future.
Anyway, for those that are contacting me and trying to sell me their "private" collection of swords, I'm not interested. I'm only interested in finding out more about this blade we found. That's all! In the meantime I'm enjoying the education on Japanese swords and a growing appreciation of the workmanship of this knife :D. It looks authentic, but I will not be disappointed if it turns out to be fake, modified or worthless. I have no financial investment in it, just education time and that is not a loss but a gain to me.
Bo