Early mark of Bros. Buch, which refers to fusion-based silver deposition. It consists of German inscription "GEBR BUCH WARSCHAU", that means the shortening of "GEBRÜDER BUCH WARSCHAU" (in English "BROTHERS BUCH WARSAW"), put in a cartouche of about 3.8 mm x 9.7 mm. Below, a catalogue number is given. Rather common.

Next mark of Bros. Buch, which refers to fusion-based silver deposition. It consists of the Polish inscription "BR. BUCH w WARSZAWIE", which is the shortening of "BRACIA BUCH w WARSZAWIE" (in English "BROTHERS BUCH in WARSAW"), put in a cartouche of fancy shape which is similar to that used in mark No.1. Above the cartouche there is an image of the Russian State Coat of Arms, two-headed eagle, a version with a "separated" crown, used in 1857-1883. Below, a catalogue number is given. Rather common.

Last mark of the Bros Buch foundry, which refers to fusion-based silver deposition. It consists of the Polish inscription "B. BUCH", which is a shortening of "BRACIA BUCH" (in English "BROTHERS BUCH"). Below, a catalogue number is given. Rare.

First mark of Bros. Buch company, which refers to galvanic silver deposition. It consists of the Polish inscription "B. BUCH" (see above) + another Polish inscription "W.M.F. WARSZAWA GALW.", put inside the triangle. Some researchers suppose that the abbreviation W.M.F. refers to Württembergische Metallwarenfabrik. However, amongst all Warsaw silver plate factories, only one (Roman Plewkiewicz) kept permanent contacts with this company (see below). It should be also emphasized, that the exact widely-used abbreviation of Württembergische Metallwarenfabrik is WMF (and not W.M.F.!). Therefore, the use of such abbreviation in the Bros. Buch mark looks like an advertising gimmick. The inscription "GALW." in a triangle is the shortening of the Polish word “GALWANIZACJA” (“GALVANIZATION”), which refers to the method of silver deposition on the surface of a base metal (usually, on brass). Note the dot at the end of the inscription "GALW.". At the top of the triangle there is a small six-pointed Star of David (sometimes, a small five-pointed star). Inside the triangle, there is a Roman digit II, the meaning of it is not clear. Below, a catalogue number is given. Rather common.

A variation of previous Bros. Buch mark with a shortened writing of the word "WARSZAWA", namely, "WARSZAW" instead of "WARSZAWA". Extremely rare.

Another variation of the Bros. Buch No.4 with very shortened writing of the word "WARSZAWA", namely, "WARSZ." instead of "WARSZAWA". It was probably used due to shortage of space for marking, i.e., while marking the bottom rim of a tea glass holder. Very rare.

Next mark of Bros. Buch company, which refers to galvanic silver deposition. It differs from the mark No.4 by the more thinned out inscription "B. BUCH". Common.

Last mark of Bros. Buch company. It was used without additional inscription "B. BUCH". This inscription was put inside the triangle together with two other inscriptions "W.M.F." and "GALW.". Contrary to the previous triangles, this one contains three (!) six-pointed Stars of David. This mark is probably a pattern and therefore extremely rare.

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