Uncertain which model it may fit, pretty sure it does NOT fit a Honda CB CL 350.  However, this sure has all the hallmarks of a AAA brand rack except the brand itself.  It is marked 1035 and I have had AAA racks that in addition to their model name also had a number on them .AAA brand was the defacto aftermarket brand used by Honda dealers  This is in excellent condition very bright chrome straight and only very minimal rust at welds underneath. not where it can be normally seen

the rack is 64 CM total length, 

26mm inside  between the two shock mounts''

The mounting area for packages is 28 cm square.

Buy with confidence, I am a well known person in the classic motorcycle community with a 100% Ebay rating.  I also have an ecommerce classic website with thousands of parts not shown on Ebay—plus lots of nostalgia pictures, stories and a blog.  Ebay won’t let me hyperlink it, but the address can be seen in the logos below.  Check it out, you won’t be sorry.