Nicro Records was a DIY label. It managed one singles. 'Centenary Calypso' by Hobbin, a record celebration 100 years of Essex County Cricket Club. The catalogue number of the single was K-310376, which fits no series that I can remember coming across, and the year of issue was 1976. Distributed By Nicro Records. Thanks to Robert Lyons For The Info.

76 Hobbin Centenary Calypso Part 1 NICRO K 310276