Old Stanley Plane Question!

[ssig2222]

I have an old Stanley No.5 plane with a corrugated bottom. It is pretty old (like all of Grandpa's tools) but I am trying to figure out how old. I was curious because I see some with the patent on them behind the frog and some do not. Some have the Stanley sweetheart claiming certain dates and some claiming others. I am selling this plane ASAP (but would love to keep it) and it would help to know about it's age since it's in great shape. It definitely wasn't used much by my grandpa and it was stored well. I would greatly appreciate any information!
Also, I have a plethora of old tools I am curious about and may be posting pics and Q's sometime. Let me know if anyone gets a kick out of really old stuff like car starting cranks and just antique tools in general.

Oh, by the way, the info on this plane says it is 2" wide. When given plane widths, does it usually pertain to the blades cutting width or the overall width of the tote?

 

[Zrexxer]

It's a 5C Bailey Jack plane, manufactured from 1898 through 1973. The only distinguishing characteristic that I can make out in your photos is the kidney shaped hole in the lever cap, which would place it at post-1935. If you've got any better pictures or can describe any other distinguishing marks on it, it may help narrow it down a little more.

A 2" jack plane has a 2" iron. The "tote" is the rear handle.

 

[ssig2222]

I do have better pictures. I haven't really posted on this site and just saw the tiny file sizes allowed and just took some quick ones. I'm not very "savvy" on planes and old tools as I'm just a young buck so what I was saying was that in measurements I've looked up it just lists this plane as 2" wide. The body is 2 1/2". On Patrick Leach's website http://www.supertool.com/StanleyBG/stan1.htm has some information. In the link I added, there is a picture showing 4 developments in the frog and the way it is seated. My plane is fashioned in the manner of the third one in that reference. Below one of the 2 screw that attach the frog to the body (on the sloped portion ) there is a "U" stamped (picture 6 of 6 in my post--left side in the japanning). Another thing I was curious about was the "O" on the upper portion of the blade that appears in the pictures I posted. And about the whole patent thing.. some of them I see have it and some don't and they claim dates that are far apart. I can't seem to get all the ducks in a row. There must be a lot of mutt planes and dishonest people hyping up planes they are selling. When I part with this plane, I'd like for the person receiving it to get what they were looking for and for myself, to be fairly paid. As for any additional details.. There aren't any more symbols or letters except for the lateral adjustment lever says "STANLEY" at the top and just above that there is a rectangular cut out that is filled by the piece at the very end (a protruding half of an egg shape for gripping purpose). Oh, and of course, the front handle isn't the short/squat one. It's the higher one. The finish on the handles is original and a deep, dark, and warm brown. I guess it is discernible in the picture, but it says that it's made in the USA. Not Cannuck-ada or England.