E257-France 1947 Poste Aérienne Ader Centenary 40f+10f Block of 4 MNH/MH

Title
France 1947 Poste Aérienne Ader Centenary 40f+10f Block of 4 – MNH/MH
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Category
Stamps > Europe > France > Air Mail (Poste Aérienne)
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Condition
Mint Never Hinged to Lightly Hinged (MNH/MH) block of four.
Fronts are clean with strong colour and sharp detail.
Reverse shows scattered brown spots (toning/foxing), visible mainly on the gum side.
Perforations intact; no tears or thinning.
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Item Specifics
Country/Region: France
Year of Issue: 1947
Stamp Type: Air Mail (Poste Aérienne)
Theme: Aviation / Louis Blériot / Clément Ader Centenary
Denomination: 40f + 10f
Number of Stamps: Block of 4
Catalogue Reference: Yvert PA 29 (block) (equivalent numbering varies by catalogue)
Quality: Mint (gum present)
Grade: Ungraded
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Description (you can paste this directly)
Block of four French Poste Aérienne stamps issued in 1947 to commemorate the centenary of aviation pioneer Clément Ader (1897–1947).
A classic aviation design showing an aircraft with bat-style wings.
Mint block with original gum; reverse shows age-related toning spots.
A desirable multiple for collectors of French airmails and aviation philately.
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Valuation (UK Market – Realistic)
Catalogue value (single stamp, hinged): ~£8–£12 each
Catalogue value (block, ideal condition): £40–£60
Adjusted for reverse foxing: £18–£28 realistic private-sale value
Foxing on the gum significantly reduces premium, but blocks of four remain collectible.
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Recommended eBay Pricing (GBP £)
Buy It Now (Best Option)
Price: £24.99
Accept Offers: ON (expect £18–£22 offers)
Why: Appeals to collectors who want multiples but accept toned gum
Auction Option
Starting Price: £9.99
Duration: 7 days
Expected Result: £15–£25 depending on competition
Tip: Start Sunday evening (UK time) for best visibility
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Postage Recommendation
Royal Mail 1st Class Signed For (UK)
International Standard or Tracked (for overseas buyers)
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