If you want to get a detailed analysis of the icon of the age, as what is written, etc. - then you better give it to the icon-painting workshop. There are masters who are specially trained and know all the details, will be able approximately to tell you about your relic.
If you want to determine approximately the period is your icon, look at the basis on which it is drawn. Very old always depicted on the tree. But with this item, you need to be very careful. Indeed, in some cases, the modern painters can paint it "antique". And man, ignorant of the basics of painting and religious culture, would be difficult to determine how ancient in front of him the icon.
But on sheet metal icons produced in the 19th-early 20th centuries, Usually at the end indicates the name of the factory. If it is well preserved, it is possible to try to recover the age of the icon. The only disadvantage of this icon - it is of no artistic value. Interesting only from the point of view of historical and cultural heritage.
In that case, if you are well versed in the intricacies of different artists, painters, the age of the icon can be determined by the style of their work. Some artists of the past centuries on the reverse side of religious paintings leave certain marks. They did it in order to leave himself a reminder of who the customer is, what should be the plot of the future image and how much time he has to complete this work.
Equally important to determine the age of the icon has the technique of applying the paint. In different times it was regularly varied. Also pay attention to the primer base. It is also an important indicator of the antiquity of the image. Well, of course, the actual image. Every age has its own manner of images of images of saints. In order to understand all the intricacies, armed with a dictionary of art and begin to examine your existing artwork.
Best find out in advance the age of your existing relics. Because if one day you want to take your icon abroad, but will not know how old she is, you can easily slow down at the border. Works of art older than 100 years can not be exported out of the country without certain supporting documents.
Advice 2: How to determine the value of the icon
The value of the icon depends on its age. To fully understand the characteristics of antique items, you must fully understand the painting and to memorize the works of famous artists, not only of the present.
Remember that not all the icons represent value, especially if it's an icon of the 20th century. Icons of the Soviet era will be of value after some time. But one rule for determining the value of the icon works no doubt - the older you are, the more value it represents.
Consider the icon - if it depicts a special religious event, and even the author is a well-known painter, the value also increases. Talent fulfillment icons, originality, manners play an important role. Icons are very much appreciated by the schools of letters (e.g., Stroganov letter is quite rare). The plot may be non-standard and with little pictures on the edges (with the marks).
Great importance has artistic quality denomination – official Orthodoxy or the old believers. Especially if the icon is painted by hand, not industrially - she always has a substantial monetary value.
Ask for help from professionals. Experienced antique dealers to determine the age of the icons on the Board from the back side, but not everyone is able to do it accurately. Most often, the appraisal comes in color, quality of drawing, composition, freshness of ideas. If possible, consult with several specialists and antique dealers. Better if these people will be Museum professionals with huge experience.
Do not attempt to determine the value of the icons on the photos, because full information on its price is impossible to say. But don't ask for rating to little-known you and your friends or colleagues people. You can cheat, and for a pittance you sell a valuable rarity. Don't give an icon for restoration in the little-known centres of expertise - you just may not get your thing back to original condition.