Hello JayBecker,
Welcome! The information given in that article re. the number of CE-100DPs with a Bigsby came from me, but it was an incorrect interpretation of the actual info I gave. The guitar that was the subject of the article was part of a batch of CE-100s that were serial number stamped towards the end of the year 1960. As was usual for Guild not all guitars from a batch were completed right away and that particular instrument was completed with a Guild Bigsby more than half a year later together with 3 other CE-100s from that same batch. That is the information I gave so these instruments were not the only 4 with a Bigsby that were done during 1961, but the only 4 from that 1960-batch that did get one. Your Guild CE-100DP was from a 1961-batch, which Guild did several more of during that same year.
Sincerely,
Hans Moust
www.guitarsgalore.nl