Help on Identifying British bike frame ?

[xhypothesis]

Hi All
30 Years ago i had this idea of building a classic bike after restoring an old Bantam, c15, B25, 3Ta, and lastly a 650cc Tribsa . But those bike days where ended abruptly due to ill health and had to sold them all .
Recently i was up in my loft and found some odd spares id totally forgotten about  including a Bike frame , the problem is i cannot recall what model it is and been banging my head last few days . Is there any knowledgeable person here who can solve my mystery please 
Thanks
Mac

[L.A.B.]

It's a Norton Wideline frame, hopefully, the model code will be stamped (horizontally), maybe with a 'year code'  letter, above the frame number (stamped vertically)  on the L/H gusset plate above the swinging arm spindle hole?

 http://www.bmh.com.au/norton/index.php?id=modelnum

[esometisse]

its an early wideline of 1952 to 1954 with the bolted-on rear section so it would originally have housed a 500cc model88 twin engine - the model code should read 122 accordingly.
The bigger twins came later and thus used the frame with the welded rear section whereas the ohv singles were never sold in a wideline featherbed.
Manx and Inter frames look a little different - the upper horizontal tube on the right has a flattened inner section to clear the cambox.

Cheers
Andy

[R]

Actually, ES2's and Model 50s were sold in widelines for 1959 AND 1960.
But were not bolt-on rear subframes...

[esometisse]

right!

Andy

[xhypothesis]

Hi all
The frame number was  began with J 22  horizontal   checked the number by the chart posted here and seem its 1954 model

Thanks everyone  for the  information mystery solved 

[rogerwilko]

A wideline ES2 of mine many moons ago!