Beschrijving
A single issue of this periodical, no. 291, 18. May 1778, without title page, without place or printer, 241-248 pp. Without binding. Printwork in good condition. The contribution in this issue is signed with the initials T.A.C.P. ‘De Opmerker’ (1-312) was published weekly between 26 October 1772 and 12 October 1778. It seems to be a continuation of the periodical ‘De Onderzoeker’ (1768-1772) and there may be a connection to Johannes Petsch (1720-1795) as editor of both periodicals.