Meyle is never going to be the same as OE. The vast majority of aftermarket springs are a "1-size-fits-most", where the aftermarket mfr produces a generic spring that is similar to a half-dozen OE springs which are NOT the same, and claim it "fits" or is "suitable for". This is almost never the case. The Meyle could be an exact reproduction of the OE #12, but I'd be surprised if this is true.
However, you could gamble on the Meyles and see what arrives. Measure it carefully and compare to the coil spring spec spreadsheet on W124performance.com. At $60/pair it's a cheap experiment. Note that FCP says these ship in 2-3 weeks, meaning they are not in stock, and it could take a month or more to arrive.
I'd look for a good used set from someone parting out an 034. There's a single NOS #12 on UK eBay (
link) which is obviously new / NOS, although it doesn't show the part number stamped on the bottom coil. Be careful, some sellers have bad listings, like
this one which claims NOS but looks used, not new, and also does not show the part number stamped into the bottom coil.