Not trying to be a stickler for detail...I'm just showing off.
The Vindicator,
https://www.dars.org/jimz/est1367.htm
and the USS Pleiades
https://www.dars.org/jimz/est1910.htm
Had a slightly different nose cone than the Interceptor.
The Interceptor had a 2 piece injection molded nose cone that you had to glue together.
The USS Pleiades and the Vindicator had a "blow molded" nose cone.
The injection molded nose cone on the Interceptor proved so popular that Estes wore the mold out!
They went to the blow molded cone and apperently the mold was of such poor quality that some of the cone were just plain "bad".
They are the same identical shape.
The Argosy, Starhawk, X-16, Falcon Commander, USSF Fireflash...etc used the PNC-50SP Centuri cone that was used originally on the Centuri Spacemaster.
https://www.dars.org/jimz/cen5348.htm
The PNC50SP mold was so good that it was used continually up until about 8 years ago when it just plain wore out.
The PNC-50SP was last used in the Venon. The Venom was also available in a "Bulk Pack" of kits.
sandman