Technological disparity
 

Not long ago I saw in one meeting a curious work. Published during the life of the artist, who died before the Revolution. Exhibited several times.
Full package of Russian expert, but here's what's interesting:

"Physico-chemical parameters of the oil in the paint layer and the ground indicate that the picture painted in the 20-30-ies of the 20th century" - ArtKonsalting

"Used in art materials and signs of aging refer to the picture date - the year 1905." Timing

"The authenticity of the signature, the dating of the technological characteristics, similar to the standard and the high level of performance allows to confirm the authorship and date" - Grabar

"The state of painting materials meets 900-10-th year, as confirmed by the results of chemical analysis" - NINE

How to understand a fundamental difference in dating?
How accurate analysis of the binder and whether he did not date painting - in the range of 5-10 years?
Are the conditions of existence, storage, and so on. does not affect the polymerization of oil? Is the picture that "live" in a warm Moscow or Paris apartment will not be on the parameters slightly different from her sister, yutivsheysya on a cold damp basement or attic?

Binder - the weakest point of technological ekspertitzy there range in 20 years is considered normal.

How, then, Art Consulting so peremptorily dates pictures up to 5-10 years?

And could you give me a link to the material?
Thank you in advance.

P.S.
Thanks - found himself