Add my three pennies. If the text of the letter is not five and a half lines, but at least a page of a long text, a qualified expert handwriting specialist (well combined with a psychologist) is involved to draw up a possible social and psychological portrait of the writer. and then - we look at the advice of Andrei from Kurgan.
The cost of this study is from 12,000 rubles. up to 28 000 rub. (on average) in St. Petersburg. If you need an official examination - from 15,000 to 40,000 or more.
The main tasks solved within the framework of handwriting examination:
* Handwriting examination allows you to establish the executor of handwritten text, notes or signatures.
* Handwriting examination allows you to establish the fact that one person performed various texts or individual fragments of the text, handwritten signatures, text and signatures.
* Handwriting examination will help in establishing the gender, age, and psychological properties of the manuscript artist (only for large texts).
* Handwriting examination establishes the fact of the recording, text, signature in an unusual position, on an unusual substrate, an unusual writing device, an unusual way of holding a writing device,
* Handwriting examination establishes the fact of drug or alcohol intoxication of a person or an unusual psychophysical state.
* Handwriting examination establishes the fact of the execution of the text, recording, signature in unusual conditions or in the unusual mental state of the writer.
* Handwriting examination establishes the fact of physical, moral or other negative influence on the person who executed the text, record, signature.
* Handwriting examination establishes the fact of intentional distortion of handwriting, etc.