quick Jolida jd100 / jd100A question

I've looked all over and have not been able to answer this question:
Is there a difference between the jd100 and the jd100A, or are they identical? I see it written both ways.

Mike at Jolida told me that there is no difference. Mine is hot rodded by Parts Connection and I have 5751 triple mica black plates from GE (1950's) in it, and I am very very happy.