C2's are probably copies of one of the other two sets (C1 or - less likely - C3) and show it, he doesn't though, he's altogether a fresher sculpt.
My favourites dukeing asteroid e asteroid, not the commonest, but I've found them two or three times over the years and seen them a few other times on feebleBay, so they were quite numerous sometime (probably in the Woolbro sets - see below)? Gold turn-up in about the same quantities, while the red-chap is the only one I've got! Possibility he's a Gum-ball machine capsule prize/Christmas cracker type thing, but I suspect he's from the US 'comic offer' sets (see below), where half the contents were this colour, the other half the common silver?I have someone to thank for the silver-troop shot - Theo van der Werden, I think? Cheers Theo - it all gets used eventually! And the gold patrol are advancing up a Cane trench!
Base mark is similar to the C1's, but much fainter and a bit smaller (still a DIN font; 'HONGKONG') than the C1's, with no dimples, holes or double-stampings, the sepia image is me trying to show you that a gloss-red figure inches from the camera-flash has the same marking! There is a gap between the two words, but it's so thin I've given them the one-word mark. Their numerousness is down to the fact that they were carried by various people in various sets, mostly generics in independent corner stores and newsagents, but at least one branded supplier Woolbro (left), where they carried the same '445' code as the other sets in the line (Fort Cheyenne, Mobile Task Force and Roman Fortress). Age-wise they are probably newest on the left (Woolbro mid-1970's) and oldest on the right; a generic from the late 1960's. The two later sets both come with a copy ofMattel's Major Matt Mason space walker (also nicked by Eldon's Billy Blastoff) and a rocket which I think is taken from MPC (? Someone like that!), but which has had a safety 'bulb' added to save eyes . . . it was carnage in the earlier 1960's blinded kids as far as the still-sighted could see! On the subject of Blast Off (at least two board-games, a play-set and a book, the book titled in homage to all the other 'Blast Off's!), Five Star, Helen of Toy and others carried a set (in two sizes - 117 and 196 pieces) under the same Blast Off moniker, which I suspect probably contained these C2 figures (in the absence of other better candidates) which would have included my red figure - on one side - with yet more silver figures, but this is still conjecture? The two brands here are clearly the same outfit working from the same address.Some sources claim Giant figures were in the sets, but without empirical evidence, and while the sets are very rare, so is my red example! As the Blast Off sets were red and silver, and given some will claim everything Hong Kong and small scale is "original Giant", I suspect the truth is that these common figures were the ones used. Many thanks to Peter Evan's for one of the comic pages.
===============================================================