Real one. Notice the hair on the neck of the eagle? very different...
http://www.ebay.nl/itm/RUSSIA-NGC-MS-62-BN-5-KOPEKS-1852-EM-RARE-THIS-NICE-/360642684057?pt=US_World_Coins&hash=item53f7faa499#ht_1114wt_1163
I bought this in Russia on a market. It looks far too new for the periode.
http://www.ebay.nl/itm/RUSSIA-NGC-MS-62-BN-5-KOPEKS-1852-EM-RARE-THIS-NICE-/360642684057?pt=US_World_Coins&hash=item53f7faa499#ht_1114wt_1163
Real or fake?