P81-Switzerland 1971 NABA Basel Philatelic Exhibition FDC Cover Block of 4 Helve

Title
Switzerland 1971 NABA Basel Philatelic Exhibition FDC Cover Block of 4 Helvetia 50Rp
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Category
Stamps > Europe > Switzerland > Covers (First Day Covers)
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Condition
Very good condition – clean cover with clear cancellation marks. Slight age toning on edges and minor handling wear. Envelope intact.
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Item Specifics
Country/Region: Switzerland
Year of Issue: 1971
Event: NABA Basel (National Stamp Exhibition)
Type: First Day Cover (FDC) / Commemorative Cover
Stamps: Block of 4 × 50 Rp Helvetia (Swiss cross design)
Cancellation: Basel exhibition special postmark (dated 4–13.6.1971)
Topic: Philately / Stamp Exhibition
Colour: Multicolour (blue/red/white)
Condition Type: Used on cover
Original/Genuine: Yes
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💰 Valuation
Estimated market value: £6 – £12
Similar philatelic exhibition covers typically sell in this range depending on condition and demand.
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✅ Recommended Pricing Strategy
Buy It Now price: £9.99
Accept offers to encourage quicker sale
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🏷️ eBay Listing Price
Start price (fixed): £9.99
OR
Auction start: £4.99
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🔨 Auction Option
Start at £4.99
7-day auction duration
Add “Buy It Now” at £9.99 (optional)
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📈 Selling Tips
Mention “Block of 4” and “Exhibition cancel” in title (already included ✔)
Use clear close-up photo of stamps (your second image is perfect)
Offer combined postage if listing more covers