1853-55 Imperf 4c pale blue SG 20, margins close - at the top - to good, overinked but clear 'B G/A 5 C/DE7/1857' cds of Sparta (Proud Type D1), Cat £700. A very scarce stamp, especially this fine.

Grade A (Image1)

Estimate AU$300

1862-65 Thin Paper Perf 12 1c red-brown SG 41, light 'A03' cancel, Cat £250.

Grade A B1 (Image1)

Estimate AU$60

1876-79 De La Rue 24c emerald-green with the Watermark Inverted SG 132w, exceptional centring, light 'A03' cancel, Cat £550. A very scarce stamp.

Grade A A1 (Image1)

Estimate AU$200

1938 KGVI Pictorials 1c 2c 3c (from the KGV series) 6c 12c 36c & $1 each with diagonal 'Marine Detachment' Overprint in Black or in Red, characteristic gum tropicalisation. Status? [A well-referenced online article states there was a small American Marines Detachment in British Guiana between 1942 & 1944: see https://www.usmilitariaforum.com/forums/index.php?/topic/294209-1944-marine-detachment-in-british-guiana/]

Grade A/A- (Image1)

Estimate AU$100

1954-63 QEII Pictorials 3c Water Lilies imperforate plate proof block of 6 (3x2) of the vignette only in brown/buff, the other side with $2 part-block of 6 in magenta plus Perlis 1c Copra two part-blocks of 6 at 90 degree angle. Lotsafun! [What appears to be a vertical crease is actually the heavily impressed edge of the Perlis stamps]

Grade A (Image1)

Estimate AU$60