Eldor coils are not shipped in Eldor packaging. If you received BBT coils with the correct part number, then you have received the correct parts.
Eldor is a very popular brand due to its presence as an OEM part manufacturer. However, Eldor does not have a consumer-facing aftermarket division. All Eldor products sold as OE parts to the public will be branded as BBT.
There is information about the Eldor brand on Eldor product pages: