If you're happy with pearl bulbs rather than visible filaments then Osram Parathom Classic P40 4W B22D 2700K look as good as the real thing to me. I would prefer clear rather then pearl as I like the filament refracted through the ribbed glass shades, but that is probably asking too much. These are probably brighter than 40W bulbs, but CRI is mediocre at 80.
Ones I have are marked opal on the box. Pearl tends to be not even all over the lamp. These are - except you can just about see the filament through the coating.
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