The card count appears to be the same as other eBay listings for complete sets and 1958. The problem is that unless they are dated it could be sellers selling like items and assuming that 1958 is correct. The listing I am looking at on eBay has they maker as Anonymous, "This item is a complete set of 25 standard size Original Trade Cards issued Anonymously in 1958 on the theme of Modern Aircraft. Some of the aircraft included are as follows:- Armstrong Whitworth Meteor N.F.11, Handley Page Hastings, Avro Canada CF 100, Avro Shackleton M.R.2, Percival Provost T.1, De Havilland Vampire, Saab A-32 Lansen, Convairliner 340, Boulton Paul Balliol, Westland Sikorsky Whirlwind, Boeing B-47E Stratojet, North American B.450 Tornado, Fairchild C-119 Packet, Percival Pembroke C-1, Vickers Varsity T.1, Douglas X-3, Beechcraft Bonanza and others. Lots of interesting and statistical text printed on the backs of the cards."