Nice score, Jim. I'm glad it's in your capable restorative hands; although it appears to be in great shape as is!
According to Hoover300's and my research, the Junior Models H & J were manufactured from 1929 to 1942. One had Deluxe features, but I don't recall the model.
If any VL Eureka contributor ever visits the McLean County History Center where Eureka’s archives are kept, we may be able to learn more specific details such as serial number production years.