A595-1970 Royal Astronomical Society 150th Anniversary First Day Cover Sir Wil

🏷️ Title
1970 Royal Astronomical Society 150th Anniversary First Day Cover – Sir William Herschel Postmark, Rembrandt Philatelics
---
🗂️ Category
Stamps > Great Britain > Covers > Commemoratives (1953–1970)
---
💎 Condition
Very Good (VG) – Clean envelope, clear postmark (1 APR 1970, Slough, Bucks), intact stamp (1/9 Royal Astronomical Society issue), with original Rembrandt Philatelics label and embossed back design.
---
📜 Item Specifics
Type: First Day Cover (FDC)
Issue Date: 1 April 1970
Event: 150th Anniversary of the Royal Astronomical Society
Postmark: “Sir William Herschel – First President – Royal Astronomical Society – Slough, Bucks – 1 Apr 1970”
Stamp Value: 1/9 (One Shilling & Nine Pence)
Stamp Theme: Royal Astronomical Society 1820
Publisher: Rembrandt Philatelics, Botley, Hants
Design Artist: A.G. Bradbury (cover illustration)
Embossing: Astronomical motifs on reverse flap
Condition Notes: Slight age toning, no tears or creases, stamp intact and legible postmark.
---
💰 Estimated Valuation
Typical collector’s value (as of 2025):
£4.00 – £8.00 (depending on condition and demand)
Rare or pristine Rembrandt Philatelic versions may fetch up to £10–£12.
---
💡 Recommended eBay Listing Price
Buy It Now (Fixed Price): £9.95
Auction Start Price: £4.99
Auction Duration: 7 days