Robert Brendel botanical models by Fumeo.
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Interesting models ‘Curved seed plant – No 165’ which are also made by Brendel. You find 3 of them on the Brendel  catalogue page 38.
Gerade Samenanlage – no. 164                      Just seed plant – No. 164
Umgewendete Samenanlage – no. 165                              Applied to plant – No. 165
Gekrümmte Samenanlage – No. 166                 Curved seed plant – No 166
The Brendel catalogue is dated 1913-14 and gives an overview of the three models. Retailer: Prodotto in Italia nei laboratory  A.Fumeo – Italia –  Proprietera – intellettuale – industrial – Riservata a termini di Legge.