E84-Vintage 1950s Swiss Envelope with 20c Helvetia Stamp –Kath. Lehranstalt St.

Here is your eBay draft listing with valuation in £, based on the envelope and Swiss stamp shown in the images:
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📝 eBay Draft Listing
Title
Vintage 1950s Swiss Envelope with 20c Helvetia Stamp – Kath. Lehranstalt St. Michael Zug Postmarked Cover
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Category
Stamps → Europe → Switzerland → Postal History / Covers
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Condition
Used – Vintage Condition
Visible age-related wear
Envelope intact with light edge wear
Clear postmark and original 20c Helvetia stamp
Handwritten address still visible
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Item Specifics
Country/Region: Switzerland (Helvetia)
Type: Postal Cover / Envelope
Stamp Value: 20 centimes
Postmark: Mid-20th Century (Likely 1950s)
Theme: Swiss Landscape (railway viaduct & valley scene)
Original Sender: Kath. Lehranstalt St. Michael, Zug
Destination: Luzern, Switzerland
Authenticity: Original vintage postal item
Envelope Size: Standard letter size
Colour: Beige envelope, red Swiss stamp
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Price & Valuation (UK Market)
Based on similar sold listings of Swiss stamped covers from the 1940s–1960s:
Estimated Value: £6 – £10
Collectible due to:
✔ Swiss postal history
✔ Education institution sender
✔ Clear stamp & cancellation
✔ Good condition for age
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Recommended eBay Listing Price
Buy It Now: £9.99
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Auction Option
Starting Bid: £4.99
Auction Duration: 7 days
Optional: Add £1.50–£2.00 shipping (UK)
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