I have been looking at this power supply for more than 30 years now and it just occurred to me to wonder about the change in the model number.
The overwrite on the model number is how it was delivered from the dealer. I've seen a lot of A2M001 power supplies, but I don't think I've seen any A2M030s. Was that an Apple power supply model? I suspect not, since Google doesn't turn up anything.
(Sorry for the giant image.)