The condition of lots can vary widely and the nature of the lots sold means that they are unlikely to be in a perfect condition. Lots are sold in the condition they are in at the time of sale.

In addition to the catalogue description:
Anonymous French, Confusion des mauvais plaisans - Expérience de la Machine Aërostatique de M. Mongolfier au Chât. de la Muette, le 21 9.bre 1783, etching, circa 1783, on greenish laid paper, watermark Bunch of Grapes, with margins, probably the full sheet, with deckle edges, some minor foxing, creases and other minor defects.
Plate 320 x 205 mm., Sheet 417 x 272 mm.
N. de Launay after Chevalier de Lorimier, Premier Voyage Aërien En présence de Mgr. le Dauphin/ Experience faite dans le Jardin de la Muette / sous la Direction de Mr. Montgolfier/ Par Mr. le Marquis d'Arlandes et Mr. Pilatre du Rosier le 21 9.bre 1783, etching, circa 1783, on laid paper, trimmed outside the borderlines on three sides and fractionally into the text border below (trimmed into the publisher's address), otherwise in good condition.
Sheet 173 x 106 mm., Sheet 420 x 273 mm.
F. M. Will, Accurate Vorstellung des vortrefflichen Luft Ballons welche Hr. Baron von Lüttgendorf verfertigt, und den - 24 August 1786. auf der Ebene außerhalb den sieben Fischen seine Reise damit machen wird, etching, circa 1786, on laid paper, with margins, some staining and other minor defects.
Plate 329 x 215 mm., Sheet 396 x 239 mm.
Anonymous German, VORDERSEITE DES MARSFELDES. Am 1 Vendemiaire de Jahres VII; Wettrennen. Verbrennen einer hölzernen Burg durch Aerstaten, etching, circa 1798, on wove paper, trimmed outside the subject, various vertical creases, a paper loss lower right, some pale staining, other defects.
Sheet 183 x 430 mm.
Anonymous, Schematic depiction of a hot air balloon and its steering platform, etching, circa 1800, on laid paper, trimmed inside the platemark but outside the borderline, with a vertical fold at right, a 15 mm. tear at left, some staining.
Sheet 148 x 233 mm.
J. Pass, AEROSTATION - 1. Montgolfier's Balloon. 2. Blanchard's. 3. Charles and Roberts'. 4. Lunardi's. 5. Baldwin's View over the City of Chester, from Lunardi's Balloon., steel-engraving, 1803, on wove paper, published by J. Wilkes, London, with small margins, pale staining and foxing.
Plate 245 x 185 mm., Sheet 255 x 191 mm.
Johannes Hans after Albrecht Ludwig Berblinger, Flugmaschine/ Verfertigt von Berblinger in Ulm, engraving, 1811, on laid paper, with margins, the sheet previously folded horizontally and vertically, a 45 mm. backed tear at left, the pinholes in the upper part of the sheet, some staining and inscribed recto in ballpoint pen at lower left G. TO D.
Plate 225 x 203 mm., Sheet 280 x 225 mm.
Anonymous French, Songe de Mr. Malte-Brun sur la Colline de Cèdre ou Mr. Deghen traduit devant l'Academie des Oiseaux, etching with handcolouring, 1812, on laid paper, published by Journal de l'Empire, Paris, with margins, some foxmarks and pale staining.
Plate 327 x 230 mm., Sheet 377 x 278 mm.
Anonymous French, Ascencion - de M. M. Dupuis Delcourt et Richard. / des Jardins de Mr. le Duc d'Aumont à Montjean près Paris./ le 7 Novembre 1824, lithograph, circa 1824, on wove paper, printed and published by Villain, Paris, with margins, foxed.
Image 142 x 109 mm., Sheet 225 x 157 mm.
Nathaniel Whittock, ALBION - MR. HAMPTON'S SAFETY PARACHUTE, in which he made his first descent from the Montpellier Gardens Cheltenham Oct.r 3.rd1838/ and the second descent from the Baron de Berenger's Cremorne House. Chelsea. Thursday June 13.th 1839, etching and steel-engraving, circa 1839, on wove paper, trimmed inside the platemark but outside the borderline and text, some staining and foxing.
Sheet 280 x 210 mm.
Anonymous German, LUFTSCHIFFFARHRT, lithograph, circa 1843, on laid paper, with margins, foxed.
Image 200 x 145 mm., Sheet 270 x 199 mm.
W. L. Walton, Day & Haghe, By Permission of the Patentees, / THIS ENGRAVING of the FIRST CARRIAGE, the "ARIEL", / is respectfully inscribed, to the directors of / THE AERIAL TRANSIT COMPANY/ by their obedient Servants, / The Publishers [The Ariel flying over the Thames in London seen from the West], lithograph with handcolouring and engraved text, 1843, on wove paper, published by Ackermann & Co., London, trimmed outside the image and text, some staining and foxing, inscribed recto with ballpoint pen G TO E at lower left.
Image 228 x 306 mm., Sheet 328 x 428 mm.
W. Walton, Day & Haghe, By Permission of the Patentees, Mess. rs Henson, Colombine and Marriott. / / THIS ENGRAVING of the FIRST CARRIAGE, the "ARIEL", / is respectfully inscribed, to the directors of / THE AERIAL TRANSIT COMPANY/ by their obedient Servants, / The Publishers [The Ariel flying over the Nile, the pyramids in the distance], lithograph with handcolouring and engraved text, 1843, on wove paper, published by Ackermann & Co., London, trimmed outside the image and text, some staining, foxing and discoloration, a short nick at upper right, inscribed recto with pencil L.S. and 15-. at lower right.
Image 142 x 224 mm., Sheet 244 x 339 mm.
Anonymous German, HENSON'S LUFT-DAMPF-WAGEN [The Ariel flying over the Thames in London, seen from the North], lithograph, circa 1843-44, on wove paper, published by C. F. Müller'sche Hofbuchhandlung, Karlsruhe, trimmed outside image and text, foxing and staining, a vertical fold.
Image 204 x 280 mm., Sheet 270 x 324 mm.
Mostly mounted, all unframed.