Colombian oil firm is in play after Maurel & Prom’s bid is rejected  
Amerisur Resources ( AMER:AIM ) 17.85p Gain to date: 32.2% Original entry point: Buy at 13.5p, 13 December 2018 For quite some time our faith that Colombian oil producer Amerisur ( AMER:AIM ) represented a good opportunity for investors was looking shaky, particularly after disappointing exploration results in the spring. However, it looks like the industry has recognised the potential that we flagged and the market had ignored. On...