Invincible Detective Magazine
the same publisher under the same series title of which only two undated examples are known - The Counterfeiters by Rex YoungUnited Kingdom1949–195467 issues
IN#V02N14 (1951-January)#V02N14 (1951-January)
- IN#V02N15 (1951-February)
#V02N15 (1951-February)
- IN#V02N16 (1951-March)
#V02N16 (1951-March)
- IN#V02N17 (1951-April)
#V02N17 (1951-April)
- IN#V02N18 (1951-May)
#V02N18 (1951-May)
- IN#V02N19 (1951-June)
#V02N19 (1951-June)
- IN#V02N20 (1951-July)
#V02N20 (1951-July)
- IN#V02N21 (1951-August)
#V02N21 (1951-August)
- IN#V02N22 (1951-September)
#V02N22 (1951-September)
- IN#V02N23 (1951-October)
#V02N23 (1951-October)
- IN#V02N24 (1951-November)
#V02N24 (1951-November)
- IN#V02N25 (1951-December)
#V02N25 (1951-December)