gluing '60s plastics

I'm not sure how much variety there was in the plastics available in the late '50s / early '60s, but I've got a plastic part here from that era[1] which needs sticking back together - is there any particular type of glue that I should be wary of? I just have memories of those plastic model airplane kits way back, where certain types of glue would dissolve the plastic, and I don't want to have that happen on an unobtanium part... It's probably one of those things where there's no way of knowing - but I figure it doesn't hurt to ask, and it's the sort of thing where if there is a right answer, I expect that someone on this list will know it :-) [1] OT; actually the platen knob from an old Smith-Corona typewriter. cheers Jules