Boys' Magazine: The Book of Magic & Christmas Conjuring ©1931 Allied Newspapers Softcover, saddle-stitched, 4x5.7", 28 pages

Image courtesy eBay seller ShimSteel

Comments: This was an insert in Boys' Magazine Dec 1931 issue (thanks to Alan Jenkins' Football Cartophilic Info Exchange). "Boys' Magazine Wonder Book Series...No. 2; Presented Inside Boys' Magazine". I don't know who published this magazine. Another magical insert was included in issue Oct 10th 1932 issue, "The New Wonder Books Series...No. 3; Secrets of Famous Magicians".

Contents (from book ToC):

3 Conjuring Tricks and Catches
6 The Magic Coffee Beans
7 Queer Coin Tricks
11 The Entertainer’s Corner
12 The Live Robot
14 The Oracle of the Ashes
16 Card Magic
17 The Card Clock
19 Thought Reading
21 Handkerchief and Edible Candle
22 Footballers’ Names Competition
24 Chemical Magic
24 Cotton Tricks
25 Popular Parlour Tricks