WTT: Vintage (8,12,16) Bach case for French style Bach 36 case

[ttf_ashughart50wr]

Forum Members, 
I have a very nice Bach French style case that is for a 7 1/2 inch bell.  I am guessing this is from the 1960's but am not sure.  It should fit a Bach Model 8, 12 or 16 but I am not sure because I do not own any of these instruments.  I am only guessing because of the area allotted for the bell size.  If anyone has any knowledge about this case please feel free to add to the post.  I am NOT trying to mislead anyone but I never had a Bach trombone in this case.  This case has all of its original hardware and hinges.  I did add some vinyl patches at some of the typical "stress" areas but overall the integrity of this case is very fine.

I am interested in trading this case for a straight Bach 36 French case from the Mount Vernon or New York era.  I have a New York 36 in a coffin case and would like to be more period correct.

https://imgur.com/gallery/txYPZ