This vintage 8′ 9″ custom split bamboo fly rod with a Belmont signature sounds like a unique and potentially valuable piece for collectors and fly fishing enthusiasts. Here’s what you should know:

Key Features & Considerations:
1. Belmont Signature

– The name suggests it could be a handcrafted rod by a known maker or workshop (possibly a custom builder or small shop).
– Researching the name “Belmont” in vintage rod databases (like The Classic Fly Rod Forum or Lang’s Auction Records) may help identify its origin.

2. Length (8′ 9″)
– Uncommon length for vintage bamboo rods, which were often 8′ or 9′. This could indicate a specialty taper for specific fishing conditions.

3. Condition Matters
– Check for:
– Original wraps, varnish, and ferrules (cracks, loose guides, or rust?).
– Signature/ink markings (faded? Authentic?).
– Flex and action (does it feel smooth when flexed?).

4. Potential Value
– Unmarked/unknown maker rods can range from $200–$800, but if “Belmont” is a rare or sought-after maker, it could be worth $1,000+.
– Comparables: Look for similar rods by Granger, Heddon, Orvis, or smaller boutique makers.

5. Next Steps
– Post photos on forums (e.g., Bamboo Rod Forum or Facebook’s Vintage Fly Rod group) for expert opinions.
– Consider an appraisal from a specialist auction house (Lang’s, Mullocks, or a trusted rod restorer).

Would you like help identifying markings or determining restoration options? If you have photos, I can guide you further!

(Note: Without more details, this is a general assessment—exact value depends on condition and provenance.) 🎣