In regards to my ED--the model number is M00001D. Interestingly, this is the number usually used by a 512/800, but it makes sense since this particular ED was manufactured in Ireland (and originally sold/used in Holland). The M00001ED designation appears to only have been used for American-built EDs, which also seem to be nearly impossible to locate.
As for the SE/30--are you referring to the copyright date on the rear label or the date from the serial number code? I'm not 100% sure about the SE/30, as I don't have one to look from, but I know some Macs have a copyright date a year older than when they came out. The SE is a perfect example--many SEs are copyrighted 1986 on the rear bucket label (probably the year the ROM software was copyrighted). Many eBay sellers will state they have an "SE from 1986" because of this, even though their serial number will state otherwise. If you're going by the date on this sticker, be aware it's probably inaccurate. However, as Mac128 pointed out, there is a chance you could have one made in December 1988 so it would be available for the January 1989 introduction--Apple will make a model in advance so it's on the shelves. (I have a Classic dated August 1990--two months before it was available for sale--and have heard reports of July 1990 Classics as well, so I wouldn't be surprised to find pre-1989 SE/30s).
As for the SE/30--are you referring to the copyright date on the rear label or the date from the serial number code? I'm not 100% sure about the SE/30, as I don't have one to look from, but I know some Macs have a copyright date a year older than when they came out. The SE is a perfect example--many SEs are copyrighted 1986 on the rear bucket label (probably the year the ROM software was copyrighted). Many eBay sellers will state they have an "SE from 1986" because of this, even though their serial number will state otherwise. If you're going by the date on this sticker, be aware it's probably inaccurate. However, as Mac128 pointed out, there is a chance you could have one made in December 1988 so it would be available for the January 1989 introduction--Apple will make a model in advance so it's on the shelves. (I have a Classic dated August 1990--two months before it was available for sale--and have heard reports of July 1990 Classics as well, so I wouldn't be surprised to find pre-1989 SE/30s).