Duncan Twister?
never heard of that
it was a top from germany
with a very long metal wire,and a tiny wood button full of holes
maybe to blow air once it was started i dunno
the brass tip was very pointy and the top would not spin very long due to a general mistake in the proportions
but the metal wire for a launcher was really interesting
we had fun testing various buttons and "tips" and dremel holes in many buttons and beer caps,finally the "gem stickers" did the job for tips
a lot of contact
the important part is the wire
do you have this duncan top ?
could you show us a vid ?
jim