Based on the photos you provided, here’s a detailed breakdown of the designer, fabric, size estimate, and resale value of your suit jacket.
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1. Brand / Designer
Your jacket shows the label “GRAZI – custom clothier.”
• This indicates it was likely made by a custom or boutique clothier, not a large retail fashion brand.
• Custom clothiers make suits made-to-measure or bespoke, meaning the jacket was tailored for the original owner.
👉 Because it’s custom, the brand name itself doesn’t add much resale value, but the fabric and construction quality do.
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2. Fabric (Important Clue)
The inside tag reads:
“Lanificio Ferrino Tessuti – Italy.”
That tells us:
• The fabric mill is Italian.
• Italian mills (especially in Biella region) produce many of the world’s best suit fabrics. 
• These fabrics are typically high-quality wool or wool blends used by luxury tailoring houses.
Likely fabric type
Based on the texture and typical mills:
• Most likely 100% wool or high-grade worsted wool
• Medium weight business suiting
• Breathable and durable
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3. Jacket Style Details
From the photos:
Style
• Single-breasted
• 3 button front
• Notch lapel
• Flap pockets
• Probably single rear vent
• Classic business style
Color
• Gray micro-texture
This is a timeless business blazer, not trendy — good for resale.
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4. Estimated Size
40R see photos for pit to pit measurements