Wow Roger, thats freaky for me.
I too, inhereted my dads plane and its just about a dead ringer for yours except for the length, down to the paint worn off of the wooden handles.
When I was just a teen, my dad noticed I spent a lot of time making things from wood. He viewed woodworking as a chore that was done when necessity dictated it and didnt relish it in the least. One Sat. afternnoon, when I was only 12, I was making a box for some of my stuff, electronic components with boards I had picked up here and there from different places.
One was rough cut, and I was using the hand rasp type planer (all I had) to smooth it out some. He gave me a look on his way in the house when he came home for lunch. Then 40 minutes later, on his way out, he stopped and stared at me some as I stroked and stroked on this board struggling to get somewhere. I didnt stop and eat lunch, when I was woodworking I was totally immersed.
Anyway, he snapped out of his stance and went to the garage. A moment later he came out and walked up to me and said "Here son, I never use it and you will probably figure out how in no time, so you take it, hope it makes your job easier there."
I stopped and took it from him with my mouth open, mumbled a feeble thank you as he turned and left to go back to work. I was humbled by this act because this was among the tools in a metal US Navy chest he told me never to use without his permisssion, and he just gave it to me.
I have had that plane ever since, and have planned many a board with it.
Some things have a feel to them. When you have the plane set correctly, and you stroke it perfectly to reveal a nice long curl, there is not description for that instant gratification you get as it transpires. If you are a woodaholic, or any of the various descriptions we woodworkers assign each other, this tool sings to you when you use it.
I hope this same demeanor washes over you when you use your plane.
cad