first time I've seen a sound train with a neon light advert on top, or advertising insurance

https://forums.aaca.org/topic/341211-period-images-to-relieve-some-of-the-stress/page/654/

the sound trains I've found in the past, that looked exactly like this, were typically 1928 and 29 Graham Paige

https://forums.aaca.org/topic/341211-period-images-to-relieve-some-of-the-stress/page/499/