"Please estimate the age and value
 

:)> size of about 100 by 70 cm, oil on canvas

It seems that the end of 1840 - 1850-ies.

I agree, somewhere in March or April.

Life Guards Kirasirsky His Majesty's Regiment (?), Dress uniform.


Make a normal sized monogram (where A? What numbers?).
And the reward (they set a rather strange).


P.S.
Although, of course, this portrait shilny.

If there are letter -A . a portrait created between 1831 and 1855 year . August 22, 1831 The Emperor Nicholas Pavlovich appointed chief of the regiment Tsarevich Alexander Nikolaevich - the future of the Tsar-Martyr Alexander II. February 19, 1855 he was appointed chief of the regiment for his wife - the Empress Maria Alexandrovna , he remains on the list Regiment , and on the day of Holy Crowning - August 26, 1856 - Regiment bestowed rights and privileges of the Young Guard and the regiment was named by Life Guards Kirasirsky Her Majesty .
Determined by :
The Order and the tape of St. Andrew .
Badge of the Order of St. Vladimir . ( first row)

If there is the Order of St..
Andrew, what the character is not enough :) "many other awards.
But there is a medal and something foreign.
I think, craftsman drew the Order of White Eagle, but a little wrong with the shoulder :D>

Especially , I like his beard, Skipper . Whether such a style worn by the Russian military ? Another question , when did these pentagonal blocks for medals ?

On a cut of his uniform (low collar, loose sleeves, naturally, did not increase in volume form of ledges (breast)) - hardly 1830.
But such hair (sideburns, favorites and podvitye hair) had BC.
1860.
:)>

The importance of military uniforms ...
:)>