An oval number plate as fitted to race bikes from the 1930s through until fairings became popular in the early 1960s. 

Made in aluminium, they are 295mm x 240mm and are left bare so you can paint it whichever colour is required. If sticking to UK ACU regs colours are as follows:

• 250cc - White numbers on a green background 

• 350cc - White numbers on a blue background

• 500cc - Black numbers on a yellow background