There are quite a few errors* in that catalogue so I'd take the Etling attribution with a large pinch of salt.
*A quick scan through revealed a Jobling bowl listed as French (despite the reg. no. being clearly shown in the photos), a Sowerby Dora vase listed as Jobling, several pieces described as Sabino but which are not, a dahlia pattern bowl erroneously attributed to Hunebelle, etc. They also repeat the myth of Verlux and Etaleune being Etling marks...