Cloth Seal, Strasbourg, Image by StuE, Found by Tazuk.
Found in Lincoln, 51.6 x 39.2mm, 63.9g.
Ornate shield with: on a field of scrolling a bend centrally ridged and with vertical hatching to the lower half, *S fleur-de-lis S* above, baton to each side, 1623 below, all in ornate husk border // shield with: a bend centrally ridged and with horizontal hatching to the upper half and two grenades fired at both ends D:G(A)RTNERG:Z.S.Z(U:S)TRASBURG around. The reverse is distorted by the rivet.
Continental cloth seal very similar to No.305 Fig.40 in Egan "Strasbourg ... Ornate shield with: on a field of scrolling a bend centrally ridged and with vertical hatching, *S fleur-de-lis S* above, baton to each side, 1699 below [yours is 1623], all in ornate husk border // ornate shield with: a bend and two grenades fired at both ends, floral scrolling to sides and below, rosette D:GARTNERD:Z.S:ZU:STR(A)...(RG) around".
Egan goes on to say:- "The legend is in German because the city was considered part of Germany until 1681, when it was united with France. The first arms are a version of those of Strasbourg, and the second are claimed to be the family arms of Gartner in accession records (this is unconfirmed). The hatching is probably the monochrome convention for the heraldic gules (red).
This thick, heavy seal was presumably for a heavy-grade cloth..... Strasbourg produced linen-warp serges, bays, says, and tapestry.... the last may be appropriate for such a large and elaborate seal. Other Strasbourg seals found in England include examples dated between 1605 and 1715."
That would include this one which could well have arrived in England attached to a tapestry possibly still hanging in some nearby Lincoln manor.