RED OVERPRINT: 'G.T.' on Rouletted 1d bright yellow-green, rouletting on all sides, part-'STRATHALBYN' cds. Rated RR. The poorly centred 'Sir Humphrey' (Brian Farmer) and slightly thinned 'Novocastrian' examples sold for $690 & $719 respectively. [Date range 11.10.1871 to 2.11.1872]

Grade A (Image1)

Estimate AU$600

RED OVERPRINT: 'G.T.' on Rouletted 1d bright yellow-green, small separation fault at upper-left, very lightly cancelled. Rated RR.

Grade A- (Image1)

Estimate AU$600

RED OVERPRINT: 'G.T.' on Rouletted 2d bright vermilion, rouletting on all sides, fault at upper-left, Diamond-Numeral '71' of Goolwa. Rated RRRR.

Grade C (Image1)

Estimate AU$300

RED OVERPRINT: 'G.T.' on Rouletted 2d bright vermilion, rouletting on three sides & carelessly cut from the sheet into the design at the base, on plain OHMS cover with indistinct Diamond-Numeral '71' cancel & superb 'GOOLWA/JA18/70/S.A' cds alongside, to "Thos Millner/accountant/engineer in chief/Adelaide", superb 'STRATHALBYN' transit & GPO arrival cds of the same date, vertical fold at left & minor blemishes on the reverse. The stamp is rated RRRR, making this one of the rarest Departmental frankings. Ex AE Fryar: offered there with one of only two Engineer covers, the two being sold for £9 (!): see Lot 294. The only recorded 'G.T.' cover in Anthony Presgrave's Census.

Grade B (Image1)

Estimate AU$4,000

RED OVERPRINT: 'G.T ' (Stop Omitted after 'T ') on Rouletted 2d bright vermilion, rouletting on all sides but largely cut from the sheet to preserve the design, significant oxidisation, part o.g. Rated RRRRR: unrecorded used by Ron Butler. The fine mint 'Besancon' example - with small faults at lower-left - sold for SFr1150.

Grade C (Image1)

Estimate AU$300

RED OVERPRINT: 'G.T.' on Perf 11½-12½ 4d dull purple, very fine Diamond-Numeral '71' of Goolwa. Rated RRRRR.

Grade A (Image1)

Estimate AU$1,000

RED OVERPRINT: 'G.T.' on Rouletted 6d dull ultramarine, rouletting on all sides & cut from the sheet to preserve the design at right, light Diamond-Numeral '71' of Goolwa. Rated RR. Far superior to the 'Tamiami' example - light stains; graded C - that sold for $347.

Grade A (Image1)

Estimate AU$500

RED OVERPRINT: 'G.T ' (Stop Omitted after 'T ') on Rouletted 6d dull ultramarine, rouletting on three sides & cut from the sheet to preserve the design at top, large-part o.g. Rated RRRRR: unrecorded used by Ron Butler. Superior to the 'Besancon' example - small stain & cut-into at the base - that sold for SFr965.

Grade A (Image1)

Estimate AU$2,500

RED OVERPRINT: 'C.T.' Error of Lettering on Rouletted 6d dull ultramarine, rouletting on all sides, significant fault & light staining both at lower-left, indistinct cds. Unlisted by Ron Butler & the only recorded example so it should be rated RRRRRR. [The 'C.T.' error has also been recorded on the 1/-, in the Sir George Murray collection. It could yet be discovered on the 1d 2d and 4d]

Grade C (Image1)

Estimate AU$500

RED OVERPRINT: 'G.T.' on Rouletted 1/- red-brown, rouletting at right & base otherwise cut from the sheet clear of the design or just touching at left, large-part o.g. Rated RR. The two 'Besancon' examples sold for SFr1815 & SFr485 (2020).

Grade A- (Image1)

Estimate AU$600

RED OVERPRINT: 'G.T.' on Rouletted 1/- red-brown, rouletting on all sides, light Diamond- Numeral '71' of Goolwa. Rated RR. Superior to the 'Tamiami' example, that sold for $689.

Grade A (Image1)

Estimate AU$500

BLACK OVERPRINT: 'G.T.' on De La Rue Star Wmk Rouletted 2d red-orange, rouletted on three sides & cut from the sheet well clear of the design at the top, light Diamond-Numeral '71' of Goolwa. Rated RRRR: unrecorded unused. [Only the 2d & 4d were overprinted in black. This is an unusual situation where black overprints are generally rarer than red types]

Grade A (Image1)

Estimate AU$750

BLACK OVERPRINT: 'G.T.' on De La Rue Crown/SA Wmk Rouletted 2d red-orange with the Watermark Reversed, rouletted on all sides, '[STR]ATHALBYN/JY25/71/[S-A]' cds. Rated RRR: unrecorded unused. The 'Tamiami' example sold for $3400.

Grade A (Image1)

Estimate AU$750

BLACK OVERPRINT: 'G.T.' on De La Rue Crown/SA Wmk Rouletted 2d red-orange with the Watermark Reversed, rouletted on all sides, large-part unframed 'PO[RT W]A[KEFI]ELD/ JU4/1871/S.A' cds. A very rare & remarkable usage. Rated RRR+. A 46km horse-drawn tramway was built by the government between Port Wakefield on St Vincent's Gulf to Hoyleton on the Burra in the 1860s but was privately run until the end of 1870, when the government resumed control. This is the only recorded example of a 'G.T.' stamp used on another tramway.

Grade A (Image1)

Estimate AU$1,000

BLACK OVERPRINT: 'G.T.' on Perf 11½-12½ 4d deep mauve from the left of the sheet with marginal vertical watermark line at left, cut from the sheet well clear of the design at left, large-part o.g. Rated RRRRR. Ex Rev James Mursell. [This stamp may have been imperforate at left]

Grade A- (Image1)

Estimate AU$2,000

BLACK OVERPRINT: 'G.T.' on Perf 11½-12½ 4d deep mauve with the 'T' poorly printed & "enhanced", short perfs & rounded corner at upper-left, light & indistinct cds of OC14/71. Rated RRRR. Offered "as is".

Grade C (Image1)

Estimate AU$250