Modifiche

Azienda olandese, con sede a L'Aia,<ref>all'indirizzo ''"Den Haag, Rijswijkseweg 512"'' come risulta da un brevetto ({{Cite patent|DE|1694185U}}) registrato in Germania.</ref> di cui si hanno pochissime informazioni. Modelli noti: ''"Union Genie"'', ''"Union Special"''.

Azienda olandese, con sede a L'Aia,<ref>all'indirizzo ''"Den Haag, Rijswijkseweg 512"'' come risulta da un brevetto ({{Cite patent|DE|1694185U}}) registrato in Germania.</ref> di cui si hanno pochissime informazioni. Modelli noti: ''"Union Genie"'', ''"Union Special"'', ''"Airless 77"''.

Riferimenti esterni: [https://www.protopens.com/very-rare-1930s-dutch-union-genie-19500-celluloid-hard-rubber-14k-of-super-flexible-nib-push-button-bladder-fountain-pen.html], [https://forum.fountainpen.it/viewtopic.php?f=8&t=25306],  

Riferimenti esterni: [https://www.protopens.com/very-rare-1930s-dutch-union-genie-19500-celluloid-hard-rubber-14k-of-super-flexible-nib-push-button-bladder-fountain-pen.html], [https://forum.fountainpen.it/viewtopic.php?f=8&t=25306],  

[https://www.fountainpennetwork.com/forum/topic/59133-not-rare-but-not-common-novum-union-fp-pictures/?do=findComment&comment=568460]  

[https://www.fountainpennetwork.com/forum/topic/59133-not-rare-but-not-common-novum-union-fp-pictures/?do=findComment&comment=568460], [https://forum.fountainpen.it/viewtopic.php?t=29851]

Materiale disponibile: {{GenerateSmallBrandGallery|Union Vulpenhouderfabriek}}<noinclude>

Materiale disponibile: {{GenerateSmallBrandGallery|Union Vulpenhouderfabriek}}<noinclude>