I hope you're going to be fully repaired and recovered Ren, and I certainly didn't notice anything myself, and look forward to seeing you as soon as possible back to your best.
These road signs were trialled for a while but only introduced nationally in 1960, and then replaced with a new version in 1963 officially, thus making them one of the rarest made, especially as they were restricted to minimal locations so people didn't get too used to seeing them and ignored them. There is one in Barbados, but so far the only one I know in the UK is thank goodness over the river from me and still doing a fine job 50 years on.
