This set only appears in our British Trade Index part three, and it is in the anonymous section at the back of the book, hence the "Z" number. They are listed as being "Gremlins 89 x 64. Inscribed "TM Warner Bros. Inc. 1984. Nd, (66)"
The set tied in to the film of the same name, which was also released in 1984. There are 82 cards, using images from that film, and featuring two of the characters, Gizmo, the cute and cuddly one, and Stripe, the tall and menacing one.
Every packet you bought contained ten cards and a sticker. The sticker was the same thickness and size as the cards but had a peelable section, and the reverse of each is part of larger picture which you can reveal when you have all eleven stickers. We have used those as a card of the day before, on the 16th of September 2022, and the link is https://csgb.co.uk/cardoftheday/2022-09-16
Now I ought to say that these are thick stickers, more like cards. But there were also 180 thin stickers that were intended to go in a special album, and these were issued by Panini. The album was of twenty-six pages, and you can tell the American and English versions because the American version has a price on the cover and ours does not - the price is twenty five cents. However it was entirely designed as a pictorial souvenir, and there is little text. Some of these stickers are single pictures, and others are sectional, making up into larger pictures of either two or four parts. It also credits Warner Brothers, who produced the film.
There was another set of Topps Gremlins, and another film, in 1990. Both were called "Gremlins 2 : The New Batch". They also came in packets, containing nine cards, and a sticker, plus the gum, of course. There were 88 cards and 11 stickers. You can read more about those, and find a checklist at Fandom/Gremlins2