I believe these menuki date from the Momoyama to early Edo period (桃山時代 – 江戸初期時代).
The theme is Zou no Zu 象図 (Figure of Elephants). I believe these are male and female elephants, as the variation in size suggests. They both have blankets thrown over their backs. Both menuki also feature almost comical eye lashes. They are large and over emphasised, as are the case with real elehants eyelashes It is thought that elephants arrived in Japan in the Momoyama period and were sent by the Spanish to Osaka were they were to amuse Hidetyoshi and his son Hideyori. Speculation suggests that this was perhaps an attempt to smooth over relations.
It is thought that Ezo menuki are an extension of Kyo Kanagushi menuki and appeared in the Kamakura period. They continued on in to the early Edo period. It was also thought that Ezo had some connection to the Ainu but during the later part the 20th century, research found that many of the earlier Japanese sword mountings had Ezo menuki were in those mounts and as a result, it is believed that they did in fact have nothing to do with the Ainu and are probably from the surrounding areas of Kyoto or some other metropolitan city.
The sizes are as follows. Hidari 左: 33 mm x 23 mm x 5 mm. Migi 右: 28 mm x 18 mm x 5 mm.
Thank you for reading.