| Description | Image | Qty Known to Me | Last Market Price |
| Date: 5 Feb 86 Inscribed: Before Hardening | ![]() | 6 | Lady Mary Buiri (Sotheby’s 24th Nov 2010 lot 1689 realised £1’020 inc. prem) |
| Date: 22 Mar 86 | ![]() | 1 | “Aureum”, for sale by Stanley Gibbons, Feb 2016, for £1’500; Andrew Lajer 2026 £750 |
| Date: 28 Jun 89 Inscribed: After Striking Initialled “G.F.S.” is manuscript, year should be 1898 | ![]() | 1 | Lady Mary Buiri (Sotheby’s 24th Nov 2010 lot 1690 realised £1’080 inc. prem); “Aureum”, for sale by Stanley Gibbons, Feb 2016, for £1’500; ex David Willmer |
| Date: 2 Feb 98 Inscribed: After Striking | ![]() | 1 | Item pictured is from the Phillips Collection in the British Postal Museum |
| Date: 28 Jun 98 (in pencil) | ![]() | 1 | Item pictured is from the Phillips Collection in the British Postal Museum |
| Date: 28 Jun 98 Inscribed: Before Hardening | Image Not Available | 0 | |
| Date: 28 Jun 98 Inscribed: Before Rehardening (“Re” added in manuscript) | ![]() | 1 | Item pictured is from the Phillips Collection in the British Postal Museum |
| Date: 30 Jun 98 Inscribed: Before Rehardening (“Re” added in manuscript) Initialled “G.F.S”. | ![]() | 1 | Item pictured is from the Phillips Collection in the British Postal Museum |
| Date: 2 Feb 98 Inscribed: After Striking Initialled “G.F.S”. | Image Not Available | 0 | |
| Date: (2 Feb 98) Inscribed: Before Striking Initialled “G.F.S”. | ![]() | 1 | Item pictured is from the Phillips Collection in the British Postal Museum |
| Date: 30 Mar 00 Inscribed: After Striking Initialled “G.F.S”. | ![]() | 1 | Item pictured ex Griffiths (Christie’s 8th Apr 1986 lot 1027 est.£125); Grosvenor Oct 2017 lot 1528; ex “Royal Palm” |
| Date: 5 May Inscribed: After Striking Initialled “G.F.S”. | ![]() | 1 | “Aureum”, for sale by Stanley Gibbons, Feb 2016, for £1’500 |
| Date: 11 Dec 00 Inscribed: After Striking Initialled “G.S”. | ![]() | 1 | “Aureum”, for sale by Stanley Gibbons, Feb 2016, for £1’500 |










