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IR spectroscopic analysis permits the analysis of various materials to ascertain their compatibility with the presumed historic period: pigments, binders, glues and varnishes. The laboratory also digitalizes images obtained by the various techniques, carries out examinations under reflected and raking light, and performs microchemical analyses.

Certificates are issued with a clear and exhaustive report on the results of the analyses.

The stone was then moistened, these etched areas retained water.

An oil-based ink could then be applied and would be repelled by the water, sticking only to the original drawing.

The ascertainment of the authenticity of this painting has been carried out with scientific tests on the material and through the study of techniques and signs of wear.

In detail: 1) with the spectroscopic dating of the wooden stretcher once proved its originality 2) with stereo microscopic analyses for the study of the painting layer: the drying of the paint binder, the craquelure, the sign left by the stretcher, etc.

These types of prints were produced for the most part as 'intaglio' prints -- steel plate engravings, copper plate etchings, steel plate photogravures, stone lithographs, wood engravings (which is not intaglio), and later in the 1800s as chromolithographs. If you plan on displaying your print in a frame, be sure to have it matted using acid free mattboard.

Do not frame any print without using a matt as you run the risk of mildew/mold buildup when the glass is exposed to changes in heat and humidity -- which will 'sweat' on the inside of the glass and right onto your print.

During the 1800s, from about 1820 through about 1895 huge numbers of prints were created for the 'average collector' who couldn't afford the extremely expensive original paintings of their favorite artists, but who still wanted to own a piece of artwork.) the Chinese zodiacal calendar, which is a twelve-year cycle, with each year having an associated animal, e.g. (Anyone who has ever eaten in a Chinese restarant will no doubt recall this from the placemats.) During large parts of the censor seal period, the seals included a zodiacal year indication, along with the numeral for the month.Although this only technically narrows it down to a group of years, spaced twelve years apart, other indications (e.g.There are different approaches for determining the authenticity of antique paintings: - verifying authenticity through a purely stylistic evaluation - verifying the authenticity of a painting by means of objective tests of the ageing of the material - verifying the authenticity of a painting with the use of scientific instrumental methods.The combined results of the stylistic, material and scientific investigations will permit the establishing of the compatibility of the painting with presumed elements or its inauthenticity.

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