Originally a small-format magazine, it increased in sized eventually to A4 format in January 1976. Initially published in a near-A5 size format with 32-48 pages each, this was enlarged to a ‘three-quarters of A4’ size in September 1963 with 40-50 pages each, and to full A4 size in January 1976 with 56-60 pages each.
eBay