A GROUP OF EIGHT 20TH CENTURY GILT COPPER 'MENSING' SCIENTIFIC INSTRUMENTS
A GROUP OF EIGHT 20TH CENTURY GILT COPPER 'MENSING' SCIENTIFIC INSTRUMENTS
A GROUP OF EIGHT 20TH CENTURY GILT COPPER 'MENSING' SCIENTIFIC INSTRUMENTS
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A GROUP OF EIGHT 20TH CENTURY GILT COPPER 'MENSING' SCIENTIFIC INSTRUMENTS
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A GROUP OF EIGHT 20TH CENTURY GILT COPPER 'MENSING' SCIENTIFIC INSTRUMENTS

AFTER 16TH CENTURY ORIGINALS BY ERASMUS HABERMEL AND OTHERS

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A GROUP OF EIGHT 20TH CENTURY GILT COPPER 'MENSING' SCIENTIFIC INSTRUMENTS
AFTER 16TH CENTURY ORIGINALS BY ERASMUS HABERMEL AND OTHERS
The group comprising a 90mm. diameter sundial with false engraved signature Erasmus Habermel; 142mm. diameter astrolabe with Fusoris-type rete with false punched signature GEORGIUS HARTMAN NOREMBERGE ANNO 1553; 120mm. diameter nocturnal with false engraved signature ANTONIVS GIAMIN FECIT ROMAE ANNO 1595; 150 x 88mm. protractor with false engraved signature MARETZ f AIX; 85mm. diameter astrolabe with false engraved signature IOANNES BOS ANNO 1596; 100mm. diameter calendar with false punched signature A GIAMINI FECIT ROMA ANNO 1594; 106mm. diameter nocturnal with false engraved signature Gigli Mariotti Romae Ao 1591; 90mm. diameter nocturnal with false engraved signature Antonius Giamin fecit Romae Anno Dm 1592.
Provenance
Philip Joseph van Alfen (1894-1969), before 1955.
Whence acquired by Nico Israel
Literature
Deiman, J.C. 'Imitations among the Mensing Instruments' in Scientific Instruments: Originals and Imitations, The Mensing Connection (Leiden: 2000)

Jardine, B. 'Like a Bos: The Discovery of Fake Antique Scientific Instruments at the Whipple Museum' in The Whipple Museum of the History of Science Objects and Investigations, to Celebrate the 75th Anniversary of R. S. Whipple's Gift to the University of Cambridge (Cambridge, 2019)
Exhibited
Museum Boerhaave, Leiden, 15-16 October 1999 (four of the eight)

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James Hyslop
James Hyslop

Lot Essay

Erasmus Habermel (fl.1585-1606), instrument maker to Rudolf II in Prague, is considered to be one of the greatest Renaissance instrument makers. His instruments are of outstanding quality and rarely come to market (an astrolabe for the Duke of Parma sold at Christie's King Street, 11 October 1995, for £540,500). Unsurprisingly, his are amongst the earliest instruments to be copied and imitated.
In 1911, an article by GC Williamson appeared in The Art Journal reporting on the sale of the Strozzi collection of mathematical instruments. In it, he compared Habermel to Stradivarius! And it is around this time that the first reproductions appeared, many of which subsequently found their way into national collections.
In 1956, Derek Price, a researcher at the Whipple Museum, brought to the attention of international curators a group of alarmingly similar scientific instruments in their collections, most of which had a provenance tracing back to the collector/dealer Anton Mensing. Subsquent research has questioned his personal involvement, and that of his restorers the Feeterse brothers, but it is Mensing who lends his name to the forgeries.
Probably made between 1911 and 1928, the quality of the engraving and workmanship varies considerably amongst the 'Mensing instruments'. However, all can be identified as being of lesser quality than the 16th-century productions, and as being made from near-pure copper, rather than brass from the era.
Habermel is one of the more common names to see on 'Mensing instruments', but the copyists also produced multiple instruments by the leading makers of 16th-century Europe. However the existence of one maker, Johannes Bos, has been called into question.

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