In my opinion, but it is hallmarked 84, and dated 1976. Bit of research shows the hallmark is same as any other Russian silver hallmarks.
I assume the painting of the characters is also from the date. The halo of the characters feels older, it could be from the late 19th Century. Gilding color on a few spots as you can see, and on halo. Very beautiful Enamel on the Riza. The whole icon looks breathtaking in real life!
Technique of the characters is oil painting on wood in my opinion. Size of the icon is ca: 12.2 x 10.43 x 0.98 inches / 31 x 26.5 x 2.5 cm. The item show small wear due to age and storage, but still looks good. Minimal wear on the riza / oklad.The item will be wrapped and packed well for the safe travels. This item is in the category "Art\Paintings". The seller is "europeanartauctions" and is located in this country: HU. This item can be shipped worldwide.