Beautiful knife Mike

This last year has been a successful year in regards to acquiring several sought after knives for me. This is my latest. A "PRESS BUTTON KNIFE Co" "WALDEN N.Y." This is the large folder roughly measuring 4 7/8 closed. It sports Beautiful Pic Bone that is chip and crack free.
I had the pleasure of meeting a knife collector named Tom at this years GEC rendezvous. We spoke one night while having supper out at Cross Creek and in our conversation we spoke a bit about this knife. I was interested in a Geo Schrade switchblade and Tom mentioned he had this Press Button Knife. He said when he got back home he'd send me an email with pics and information regarding the knives we discussed. True to his word, he did. Tom is a stand up man and trustworthy all day long. He said, "I'll send it to you, you look at it and if you like it we'll talk more about it"
Thank you Tom

Now things must happen for a reason because after the rendezvous Duncan and I met Neal (herder) here on the forum for lunch and Neal gifted both Duncan and I his informative book on vintage switchblades that he co-wrote with Dan Fuller. I strongly encourage everyone to locate a copy as it's very informative and combines wonderful pictures of switchblades themselves and vintage ads. Well here is my knife which I have concluded is the "INVINCIBLE" model Circa late 1800's - early 1900's

this switchblade locks up solid and fires strong.
Pictures of my knife along with excerpts from Neal and Dan's book.
Neal and Dan's book.
I like this picture from the book showing the "Invincible" and "Business" models.