SWENSON, LOYD, S., JAMES GRIMWOOD & CHARLES ALEXANDER. This New Ocean: A History of Project Mercury. Washington, D.C.: GPO, 1966. — PROJECT MERCURY: BOOK SIGNED BY 3 MERCURY ASTRONAUTS.

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Estimate: $400–$600 hammer
Result
Performance
Sale: Bonhams — Space History, Online, Los Angeles · 8 July 2023
Record ID: TB-2026-393312
Record: first seen 20 Jul 2026 · updated 20 Jul 2026 · source ↗
Cite this record: TB-2026-393312 — https://thebasis.art/cite/TB-2026-393312

Project Mercury: Book Signed By 3 Mercury Astronauts., SWENSON, LOYD, S., JAMES GRIMWOOD & CHARLES ALEXANDER. This New Ocean: A History of Project Mercury. Washington, D.C.: GPO, 1966. Bonhams, 8 Jul 2023, lot 26. bought in (did not sell). TheBasis.Art, TB-2026-393312.

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Project Mercury: Book Signed By 3 Mercury Astronauts., SWENSON, LOYD, S., JAMES GRIMWOOD & CHARLES ALEXANDER. This New Ocean: A History of Project Mercury. Washington, D.C.: GPO, 1966. Bonhams, 8 Jul 2023, lot 26. bought in (did not sell). TheBasis.Art, TB-2026-393312.

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From the same sale Space History · Jul 2023

Lot	Artist	Estimate	Result
2 models, mixed materials, Northrop, 1970s, both 1:40 scale, approxim…	Lightweight Fighter Program: Pair Of Northrop In-house Models.	$1,000–$1,500	upcoming
2 Typescripts and 2 additional items, each 8 1/2 x 11 inches:	Mercury-atlas 9: Gordon Cooper's Post Flight Report & Files.	$600–$900
APOLLO 1: LARGE FORMAT SIGNED PHOTOGRAPH OF THE CREW IN TRAINING. Lar…	Apollo 1: Large Format Signed Photograph Of The Crew In Training. Large Format Chromogenic Color Photograph, August 1966, 11 X 13 11/16 Inches	$8,000–$12,000
APOLLO 1-ERA PRESSURE GARMENT ASSEMBLY (PGA) ADAPTER WITH SURPLUS TAG…	Apollo 1-era Pressure Garment Assembly	$2,000–$3,000
APOLLO 7: CREW-SIGNED "RED NUMBER" PHOTOGRAPH. Color chromogenic colo…	Apollo 7: Crew-signed "red Number" Photograph. Color Chromogenic Color Photograph, October 11, 1968, 8 X 10 Inches	$500–$700
Apollo 9: Flown United Nations Flag Signed by Schweickart.	—	$2,500–$4,000

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The closest sold results by price, artist, and medium — the appraiser's comp set, generated from the corpus. All figures converted to USD at current reference rates.