Vintage 1970s grey leather jacket size 40

1970s Bertini LeatherJacket Says size 44. However I am a 38 and it fits me only slightly too big. As you can see the chest measurement is NOT 44. So I guess this is a vintage 44? I would say a 40 in today's sizing is accurate. All measurements in the pics. If you would like a pic of something else please ask. There's a small flaw on the upper back (see pic). And the collar strap is missing. Great condition! Cool top stitching and similar to a Members Only design and cut.