Ss100 18029 [ADA47]

Doing some research for my SS100 book I came across some information that possibly indicates that chassis 18029 had a Buckler body fitted in the mid 1950’s.
I have no early history or photos apart from the fact it was listed in CJA SS100 register as early as 1971 as being in NY,
Does anyone have further info on this SS100
thanks terry

anyone any thought on this one?
regards terry