For something smaller with a ‘period’ look have a look at Bluemels https://www.s-v-c.co.uk/category/bluemel-wheels/ – 14″ or 15.5″ – I have seen a Slough Traction with one in the past.
The period French ones from Quillery (like the one I have fitted) are circa 17.5″ same as the Citroen original so probably not what your after.
David Faulkner