Over the years had many questions presented, please continue to send them through. Will post them on the site if anyone has the correct answer.
Q: Have you any records or idea of how to age registration plates by the size of the dot, eg: Y…40 mm dot… 444 , or Y…70 mm dot…444 , etc?
A: The old WA shire plates issued from 1920 to 1945 had a 3″ (76mm) dot, from 1945 to 1956 a 1 1/2″ (38mm) dot. The 1956 series plates (the first to have WA included in the top centre) have a 38mm dot. Smaller dots were used to accommodate more numbers. Low numbers are reissued, so it’s impossible to ascertain date of issue.
Q: BM (Broome) plates while travelling in the North & would like to know what the 2 small T’s (tt) denotes on some of these plates?
The TT denotes that it is a hire vehicle (most likely Thrifty) – Common in this area with them also seen in Darwin and NT.