Dating a Graflex RB 2x3 Series B

I have an RB Series B 2x3, serial number stamped underneath the top metal door is 141143. Next to it written in pencil is “T11266”. Underneath the hood also in pencil is “RB Jr” “2 1/4 3 1/4” and something else I can’t make out. The lens is a B&L Tessar, s/n 2514069 - I don’t think there’s a way to date based on the s/n. The lens has the patent date which I think changed in 1927 or so to be the patent number instead, so that’s something.
From a list of Graflex serial number online I find

119544 – RB Series B – spring 1922, listed as a Tele
154561 – RB Series B – 1926

I assume then that this is dated to sometime in the later part of that range, 1922-1926. I wonder why the hood has penciled in RB Jr, perhaps it was replaced at some point?

Last quarter 1924.

s/n 141143 was issued in 1924 to a 2x3 Graflex RB.

s/n 154561 was issued in 1926 to a 2x3 Graflex RB.

s/n 119544 was issued in 1922 to a 4x5 RB Telescopic Graflex.

Dan,
what reference are you looking at? Are you seeing a 7 as a 1?

Fair question, Charles. I cut and pasted the serial numbers from the first post in this discussion. I looked up the first two in a table in my unpublished article on 2x3 Graphic and Graflex cameras. Those two and the third came from the book.

I just checked the book, found that my table contains errors. I've edited post #3 above to reflect what's in the book.

Wrong again. Table's fine, I took years from the wrong column. Shame on me.

Thanks, Dan and shutterfinger. It looks rough on the outside, and the trapezoid mirror is tarnished and dim, but functionally it works well after some cleaning. Bellows are light tight if a bit stiff. Shutter doesn’t have any pinholes or creases, and speeds are accurate to 1/2 stop - good enough for me. I had to mod a broken Graflex roll holder to fit the back - focus is now a little off, but I’ll get a proper holder for it and then shim the ground glass if I need to after replacing the mirror. I ran a roll of Fomapan 100 through, this was shot wide open - really love those old Tessar lenses!