Vintage clarinet doctor says 22 7/8" is the threshold for high pitch,  low pitch clarinets should be 23 1/4"  +/- 1/4".  When the tops are lined up, the first side key tone holes line up between the HP J.T.L. and this new Buffet.  Seems like HP is the most likely scenario.  I'm not upset at all, they're actually hard to find for reasonable prices anymore.  I actually look for HP Boehms on purpose!  I still kick myself for not buying a HP A or C when I ran across them.  Most every one I can find is trashed and broken of any type, or the seller wants more than a good LP equivalent.

https://www.thevintageclarinetdoctor.com/-blog/the-difference-between-lp-and-hp-clarinets

Clarinets left to right, T.Berteling (playable at modern pitch), Camille Thibouville, Buffet Crampon I already had (all original parts), new Buffet Crampon, J.T.L. high pitch (all original parts).  With its current bell, it's about 22 7/8" long.  What the hell?  The other Buffet I already had is almost exactly 23 1/2" long. Measurements as shown, no mouthpieces. 

Um, well I started to measure and compare this clarinet to others I have, and the length is absolutely "bonkers" as they might say across the Atlantic.  Not having the original bell makes things more difficult.  I will get some good pics and measurements.  It's so far looking somewhere between the "high" and "low" pitch clarinets.  That makes NO sense.  I did get this clarinet from Germany.  Apparently the Vienna (Austria, I know) Opera in the 1870s played at A=447hz, yeah, about halfway between what we might call "low" pitch and "high" pitch.  BUT, they wouldn't have been playing Boehm system, RIGHT?!  Apparently, there was something called "middle" pitch in the UK between the 1860s and later 19th century which varied a bit, but was between A=444hz and 446hz.  I guess I'll have to get it playing.  Too bad that the mouthpiece that is with it is broken as well.  I do have a playable wooden Buffet Crampon mouthpiece, and several broken tipped or over-refaced ones that might be able to be made to play again, but only by somebody that knows what they are doing.

http://pianotuninginyork.blogspot.com/2018/11/a-history-of-pitch-standards-in-piano.html?m=1

As with any buffing or polishing method, it's necessary to remove grime and corrosion first. An electric toothbrush may help. Link to previous topic:

https://clarinetpages.info/smf/index.php/topic,1564.msg11933.html#msg11933

    Wow, I’m overwhelmed with all the feedback,... Thanks!
I realize my first post wasn’t very clear.
    I checked a little more carefully with the tuner.
Here’s the scale I’m coming up with as I start with all six holes closed.
As I open them beginning at the bottom, my tuner is reading
     E   F#  G  A  B  C#
    Maybe this makes more sense now?
   
    Embouchure could be an issue,
I’m using a Rico#2. I just ordered some 1.5 reeds (for beginners?) Should I go stiffer?
    The notes coming out flat makes sense. What is an undeveloped embrosure? Is that bad technique or is it the mouthpiece?
      I’ve been playing a Native American flute for a long time, so my finger coordination is pretty good....  I intend to be playing freestyle as I do with my flutes. I’m already tooting out a few tunes.
Lots of fun

Thanks to all of you