Complex sentence: Markings on the Berdan rifle usually consist of the Imperial Russian double-headed eagle cypher on the top receiver flat, the manufacturer's name in Cyrillic, date of manufacture, and rifle serial number, on the top of the barrel.
Split into simpler sentences: Markings on the Berdan rifle usually consist of the Imperial Russian double-headed eagle cypher on the top receiver flat. The manufacturer's name in Cyrillic, date of manufacture, and rifle serial number, are on the top of the barrel.