In Local No. 152 there was evidence (1) that the union honestly but mistakenly believed it represented a majority of the employees in the unit when it sought recognition, and one week thereafter actually attained majority status, (2) the company responded that it was not interested in talking to the union, (3) the company did not in any manner dispute the union's claim of majority representation, (4) the company ignored the union's demand for recognition, and (5) the union petitioned the Board for an election.