An analysis of catalogue Benedetto Sgaravatti n. 322 shows that each rose is listed with the name of the breeder/discoverer. Among these breeders/discoverers are some italians (Cazzaniga, Mansuino, Moro, Borgatti, BARTOLINI, Panconi, Stazione Sperimentale di Sanremo). The only roses without the breeder/discoverer’s name are roses bred by internal workers of Vivai Sgaravatti. Among these roses (Cocò, Oreste Sgaravatti, Ricordo di Leone Sgaravatti, S. Antonio da Padova, Sirenella) is Sirenella that, for this reason, can hardly be attributed to Bartolini.
'Sirenella' [Little Mermaid] is listed in the Grandi Vivai Benedetto Sgaravatti general catalogue (no. 322) 1961-62 on p. 27 - which also lists Bartolini's 'Marisa' - and described briefly as "salmone-corallo. Bocciolo doppio - recisi." As with 'Contessa M Bismarck', this variety is listed in a period when the Sgaravatti catalogues carried quite long lists (25 in this case) of Italian-bred roses which are rarely illustrated and, at the same time, announced exclusive agreements with foreign breeders, Gaujard in 1960, whose varieties are mostly well-illustrated.
'Contessa M Bismarck' is not listed in the Grandi Vivai Sgaravatti general catalogues until 1963-64 where it appears on page 6.. 'Sirenella' first makes its first appearance in the 1961-62 catalogue and again in 1965-6; on both occasions its date is given as 1961.