[RENAISSANCE?] - 15th–16th century (?) - Central Europe - Seal Stamp - Guild Seal? (Type, Middle Ages, Seal)

Seal punch, probably 15th–16th century. A die with an openwork mount set into a simple wooden handle. On the die, within a double linear border (traces of an inscription are visible between the lines, including the partially erased word “sigillum”), there is a Renaissance-style shield containing a stamped image of ambiguous symbolism. It may be: the letter “A” or a compass. Below it is a shape resembling a carpenter’s or mason’s hammer or a tinsmith’s mallet.
Wood, steel.

Dimensions: length 12.5 cm, stamp diameter: 3 cm
Condition as shown in the photos.

Depending on how the seal’s design is interpreted, it could be a medieval/Renaissance master’s seal (perhaps a mason’s?), a cooper’s guild seal, or a mason’s guild seal.