Early mark of Roman Plewkiewicz firm, which refers to galvanic silver deposition. It consists of the Polish inscription "PLEWKIEWICZ W WARSZAWIE", which means in English "PLEWKIEWICZ IN WARSAW", placed in an oblong oval. The volume of a table ware item is given in tenth parts of a litre. Such designation is characteristic for the items, produced by Württembergische Metallwarenfabrik (WMF) in 1885-1895. In addition, this early Plewkiewicz mark contains a letter "N" in a square box. Such designation means "normal thickness of silver deposited onto the surface of the base metal (usually on brass)". It is characteristic for many other Warsaw silver plate companies, utilizing the galvanic approach of silver deposition (Fraget, Norblin, Bros. Henneberg, etc.). Extremely rare.

A variation of the previous mark. It was used in the case of the shortage of place for marking. Extremely rare.

Main mark of Roman Plewkiewicz foundry, which refers to galvanic silver deposition. Very similar in design to the marks used by WMF in the same period. In the centre of the mark there is an oval, which contains the Polish inscription "PLEWKIEWICZ W WARSZAWIE", which means in English "PLEWKIEWICZ IN WARSAW". The size of the oval is 6.1 mm x 8.9 mm. Above the oval there is a fraction 1/0 (WMF used a somewhat different fraction, I/0), which again means "normal thickness of silver deposited onto the surface of the base metal". In this specific case the brass was used as a base metal, which is marked by the letter "M", put below the oval (WMF also used the same letter for marking the silver deposition on brass). Common.

A variation of the Plewkiewicz mark No.3, which differs from the previous mark by the base metal used. In this specific case the so-called "Britannia Metal" (a tin-based alloy) was used, which is marked by the letter "B", put below the oval (WMF also used the same letter for marking the silver deposition on Britannia Metal). The size of the oval is 5.8 mm x 7.8 mm. Common.

Another variation of the Plewkiewicz mark No.3, in which the Polish inscription "PLEWKIEWICZ W WARSZAWIE" forms the oval. The size of the oval is 4.9 mm x 7.6 mm. Rare.

A variation of the Plewkiewicz mark No.4, in which the Polish inscription "PLEWKIEWICZ W WARSZAWIE" forms the oval. Rare.