Gorgeous Bespoke Canali 1934 

Jacket Medium Beige Solid Wool Men's Blazer Sport Coat 40-42R Retails $1400+

Sport Coat 

Italian Sizes Listed are 50 Chest 7" Drop and Regular Length

Canali Conversion Chart Shows 50 as a 40 in US Sizes

This Jacket measures a 44 Chest this is closest to a 40-42 US Sizing

Shoulder Measurement 19"

Chest Measurement 22"

Length Meaurement 31"

Sleeve from shoulder 25” with a 1.5 seam allowance

Canali

Founded in 1934, Canali is a family-run Italian fashion brand that offers skillfully tailored men’s formal and casual wear. Canali is designed to cater to the tastes of the modern-day gentleman. 

I believe this is from their Kei collection suits, blazers and coats lightweight tailoring.