I was working on my wife's old bike this morning and had a look at the freewheel. I was surprised to notice that it was made by Nervar and not Shimano. It is a pretty standard old 6 speed 14-28T freewheel and comes off with the standard freewheel socket.

Can anyone tell me about this company? The bike is an old Townsend ladies bike, so pretty basic and pretty cheap at the time, therefore, I assume that Nervar were 'value' components?