Nataniel Ziehel, help assess the pattern

[Stuart]

Guriev , Igor, I just had some questions about its authenticity , but visiting a museum employee (judge ) ( question of evaluation was not) expert on "words " provided information to ponder , assuring that the work is consistent with technology of the time in which the artist lived .

Carefully examined under a lens , paper glued on the small canvas, and covered with varnish.

Previous owner of this work argues that this picture of her grandmother bought another in 1914.

Should I invest in the restoration and the official examination ?