no it isn't... i promise you, i bought them both, and it isn't NS. i think it's kangaroo (John Dewsbury) actually, and i bought it in the early 90s, so NS have coped it, if so...
I haven't read any other replies to OP - honest.....But I am guessing the first bit is more pricey due to the seemless moulding of the metal segments???
I am now gonna read the other posts and kick myself!!