Great faux suede blazer from the late 1960's by Lanvin Paris. 
there is no size tag, but is estimated as a small or medium, maybe a 38?

Measurements:
Width across chest under arms is 20.5"
Width across chest narrowest middle torso area is 19"
Shoulder seam to shoulder seam is 16.5"
Height of blazer from collar seam to base is 28.5"
Arm length from shoulder seam to outer edge of cuff is 24"
Arm length from center collar to end of cuff is 31"

Important. Because this jacket has no size tag, the above size can only be considered my estimation. I strongly recommend measuring a similar jacket that fits you well and comparing your measurements to those above. 

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