I therefore turn to consider how the Court's discretion should be exercised in the circumstances of this case, bearing in mind, as I must, that the prima facie case for removal is very strong indeed, since the trade mark 5018 has been unused by the true proprietor or any registered user not merely during three years but during nearly seventeen years, before the critical date, 20th April 1965. The respondents contend that nevertheless a number of circumstances, considered together, afford sufficient reason for allowing the registration to continue. The registered proprietor, the Stiftung, is a foreign corporation the management, control and operation of which have always been abroad. The mark has stood on the register for more than sixty years, and for the greater part of that time has enjoyed the presumption of validity which was originally conferred by s. 51A of the Trade Marks Act 1905, inserted by the amending Act of 1912. Its use in Australia was interrupted by two world wars, but it reappeared as soon as was practicable after each. True, its reappearance after the second war was delayed until 1952 or 1953, but this was because of difficulties existing in East Germany during the period of the American occupation, the Russian occupation, and the establishment of the German Democratic Republic. True also, its reappearance in 1952 or 1953 was in connexion with products of a new corporation, the respondent V.E.B. Carl Zeiss, Jena (formerly called the V.E.B. Optik Carl Zeiss, Jena), but they were products of the works at Jena which may be regarded in a practical sense as having been carried on as a continuation of the Stiftung's former enterprise. In important respects there was a connexion between the V.E.B. (as I shall call the new corporation) and the Stiftung. In June 1945 the American forces vacated Thuringia, the area of East Germany in which Jena is situated, taking with them certain material from the Carl Zeiss optical works, and they were followed by the members of the two boards of management which, under the governing body, the Special Board, of the Stiftung, had controlled the optical works and the glassworks respectively, and by some 120 members of the works' staff. (It was by the emigrating members of the board of management of the optical works that the new works at Heidenheim were established.) The Soviet forces thereupon occupied Thuringia and on 30th October 1945 an Order No. 124 was promulgated sequestrating the Stiftung's optical and glass works (amongst others), that is to say placing the works under the control of a nominated person, in this case a Dr. Schrade. Then followed, on 17th April 1948, an Order No. 64 which the parties agree was effective to expropriate the works from the Stiftung and to vest them, as "property of the people", in the V.E.B. as from 1st June 1948. No assets other than those comprised in the two works were ever expropriated, and, as I have said, the applicant does not here contend that the Stiftung has been dissolved. On 16th June 1948 the German Economic Commission which had been set up in East Germany published a formal resolution expressly recognizing the continued existence of the Stiftung and the existence of "certain rights and obligations" of the V.E.B. "towards the Carl Zeiss Stiftung which are to be laid down in a newly framed statute for the Stiftung". The resolution further decreed that till the new statute should come into force the powers of all the organs of the Stiftung would be exercised by a State Commission to be appointed by the German Economic Commission. Such a State Commission was in fact appointed, and the person who formed it, a Professor Rompe, instructed the boards of management to go on as before. There has ever since been a board in at least de facto control of the Stiftung's affairs, the members of which have been or have included some or all of the persons exercising control over the optical works.