Oh cool. I ordered few days ago 2011 1901-2000 World Coins book. So i will see from that what the value is today.
This St. Petersburg 20 kopek looks nice, but that said, your photographs are a bit small to really examine further.
Much better. Terrific specimen too, in high grade. I can't speak to as whether yours is a weak strike, but your specimen appears to me to be around US-EF-40 range. Here is a link to another specimen, in advertised AU grade. It's priced at $17US:
Please see below link for Sheldon Scale of Grading Coins. It's a simple primer that explains the various grades. The prefix US means grading pursuant to US standards. Other countries use other scales and qualifiers for grading coins. http://coins.about.com/od/coingrading/f/sheldon_scale.htm
Very nice coins. But i meant that is there any coin covers or something to display my coins. Sorry my mistake .
For encapsulating individual coins, I use AirTites. These can be purchased at various MM sizes. For displaying specimens, I have seen some folks use spool cabinets lined with silvercloth. Here's an example of one: