These objects are either used for marking objects, or are reminants of the impressions.  These include stamps for bricks, cylinder seals, and seal impressions.  They are made of stone terricotta for impressing clay or mud. 

Objects: Seals, Stamps, and Sealings Export: JSON - XML - CSV Clay Seals and Sealings

Object U Number Museum Number (UPM Date Reg Number) Museum Number (BM Registration Number) Museum Number (UPM B-number) Description (Catalog Card)
(none) 32-40-339 (none) (none) Unknown
(none) 32-40-340 (none) (none) Unknown
(none) 32-40-341 (none) (none) Unknown
(none) 32-40-342 (none) (none) Unknown
(none) 32-40-344 (none) (none) Unknown
(none) 33-35-180 (none) (none) Unknown
(none) 33-35-181 (none) (none) Unknown
(none) 33-35-182 (none) (none) Unknown
(none) 33-35-183 (none) (none) Unknown
(none) 33-35-184 (none) (none) Unknown
(none) 33-35-185 (none) (none) Unknown
(none) 33-35-186 (none) (none) Unknown
(none) 33-35-187 (none) (none) Unknown
(none) 33-35-188 (none) (none) Unknown
(none) 35-1-15 (none) (none) Unknown
(none) 35-1-23 (none) (none) (none)
(none) 35-1-24 (none) (none) Unknown
6085 35-1-610 (none) (none) Cylinder seal. Black steatite. Nannar, swan, minor god, votary, swan and scorpion. About BC 2400. E.
6748A (none) (none) (none) Fragment of seal impressions. (A) Bur-Sin etc. Ur azag-nun-na, minister, son of Arad-dani, judge, thy servant. (B) Same Seal used with Alteration of the royal name into Gimil-Sin the. worshiper introduced to seated Moon God- A lion "Passant" on the side of the throne.
6748B (none) (none) (none) Fragment of seal impressions. (A) Bur-Sin etc. Ur azag-nun-na, minister, son of Arad-dani, judge, thy servant. (B) Same Seal used with Alteration of the royal name into Gimil-Sin the. worshiper introduced to seated Moon God- A lion "Passant" on the side of the throne.
6960 47-29-075 (none) (none) Clay sealing with seal impression. dGimil dSin, mighty king of Ur, king of the 4 regions of the world - Igianna-ge-zu the minister, son of Araddani the judge, is thy servant. H.C.
6983 (none) (none) (none) Cylinder seal. Grey steatite. 4 standing figures. Attributes: crescent moons. About BC 2000. B.
7895 (none) (none) (none) Cylinder seal. Steatite. Black. Inscribed with the names of three divinities: ^dNI?-TUR-KU? ^dNin-dul, ^dAya. Two heavily draped divinities greeting one another, between them one line of inscription. Behind the minor deity a second line of inscription. Behind this an attendant carrying a club? Behind, a third line and a second attendant, hands clasped at waist.