The first image is of the twenty I just finished and the second is a group shot of the fifty together. I haven't started working on the other half of the first company (being the sternguard and vanguard squads) as I want to do something a bit different with them in terms of converting them etc to make them look different to your Joe Blogs tactical marine or assault marine. So they actually haven't even been assembled yet.
So there you have it. That brings the running total to 292 marines (including land speeder crew and attack bike crew as 2 marines, but not including any other vehicle(s) crew).