It sounds like you’re describing a vintage fly fishing rod rack made by Genuine Cornwall Products from Maine, possibly in a rare green finish. Here’s what I can gather or infer about your item:

Vintage Fly Fishing “Rod Rack” GENUINE Cornwall Products, Maine Rare Green

Key Details:
1. Maker: Genuine Cornwall Products – Likely a small, historic tackle or woodworking company based in Maine, USA (Cornwall could refer to a town or the founder’s name).
2. Type: Rod Rack – Used to store or display fly fishing rods, possibly wall-mounted or freestanding.
3. Color: Rare Green – Suggests a unique or less common finish, possibly hand-painted or stained.
4. Era: Likely mid-20th century (1950s–1970s), given the “vintage” descriptor and Cornwall’s potential ties to classic tackle makers.

Research & Value Considerations:
– Rarity: If this is a scarce color/model, it could appeal to collectors of vintage fishing gear or Maine-made outdoors items.
– Condition: Check for labels, stamps, or maker’s marks. Original paint/patina adds value.
– Comparables: Search eBay, Etsy, or fishing forums for similar Cornwall Products racks. A rare green example might fetch $50–$200+, depending on demand.
– Provenance: If tied to a famous maker or region (e.g., Maine’s fishing history), value could rise.

Next Steps:
1. Inspect for Markings – Look for stamps, labels, or patent numbers.
2. Check Online Listings – Search terms like “Genuine Cornwall rod rack Maine vintage green”.
3. Consult Collectors – Try forums like [The Classic Fly Rod Forum](http://classicflyrodforum.com) or subreddits like r/flyfishing.

Would you like help identifying specific markings or finding similar items?