E369-France 1939 Chardonnet 30f Stamp with Control/Gutter Block Unused No Gum

Country: France
Inscription: REPUBLIQUE FRANÇAISE
Denomination: 30 francs
Subject: Hilaire de Chardonnet (inventor of artificial silk / rayon)
Issue year: 1939 (commemorative issue)
Stamp type: Single stamp with attached gutter/control block showing red wavy printer’s markings
Catalogue reference (for context): Yvert et Tellier n° 434 (basic stamp)
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Condition assessment (important for value)
From the images:
Stamp appears unused (no cancellation)
No visible gum on the back (likely no gum / hinged / gum disturbed)
Toning & foxing spots visible on the reverse and lightly on margins
Perforations intact
Control/gutter piece present but also toned
➡️ Overall condition would be graded “Unused – No Gum (NG), with faults (toning)”
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Title
France 1939 Chardonnet 30f Stamp with Control/Gutter Block – Unused No Gum
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Category
Stamps > Europe > France
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Condition
Used
(eBay convention: stamps without original gum are usually listed as “Used,” even if uncancelled)
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Item Specifics
Country/Region: France
Year of Issue: 1939
Topic: Scientists, Inventors
Denomination: 30 Francs
Colour: Red
Quality: Unused (No Gum)
Grade: Ungraded
Certification: Uncertified
Features: Control / Gutter Piece Attached
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Valuation (realistic market value)
ScenarioEstimated Value
Stamp alone, mint hinged (ideal)£8–£12
Stamp alone, no gum£3–£5
With control/gutter, no gum, toned£4–£7
👉 The control/gutter adds interest, but toning significantly limits upside.
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Recommended eBay Listing Price (Buy It Now)
£6.99 Buy It Now
Enable “Best Offer”
Accept offers around £4.50–£5.50
This gives room for negotiation without overpricing.
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Auction Option (recommended if you want a quick sale)
Starting price: £3.99
Auction length: 7 days
Format: Auction (no reserve)
Expect final result typically £4–£6, depending on how many France collectors are active that week.