Normally the picture of the burgee in Lloyd's Register matches the chip exactly. However this is not a perfect match. It is the only burgee that comes close. Considering I have 2 Lloyd's Registers (1934 and 1946), I'm pretty sure I'm covering the right time. I'll have to find out the name of the yacht.
When I posted I did notice that I used the word Floridian. I'm sure Mark has read the post!