A lot. And some that my father in law thinks are valuable. Dunhill, Comoy Riband (2 I think), Viggo Nielson, Savinelli, and others. If I'm allowed to share urls, here's the list with links to the shared google photo albums for each.
Dunhill, original stem
https://goo.gl/photos/a95GLcJBTS7w5tvq6
Comoy Blue Riband 409
https://goo.gl/photos/Ad7Thn5U2dw52Wx89
Daniel Frank?, original stem
https://goo.gl/photos/Sc78eCKo2EHMZHfG7
Viggo Nielsen, possible original stem? It won't come out
https://goo.gl/photos/fzqVgXVMMZNNR1vz8
Savinelli Punto Oro 624
https://goo.gl/photos/buWpxwoC49k49mnz8
Barling's Ye Olde Wood, original stem
https://goo.gl/photos/dxvJQSMaiKmaXgMr5
Pibe Dan Copenhagen 150P 272
https://goo.gl/photos/nj1e9Rixh63YGtpj8
Pibe Dan Copenhagen 150P 270
https://goo.gl/photos/WEr5dVWC2EfDZLM66
Grace Bros LTD
https://goo.gl/photos/DR8cVXKwxv4y6BmQ7
Drum Major
https://goo.gl/photos/uoVqbGU1c8Aeeqgs9
"Co Bl" is all I could make out, probably a comoy blue riband
https://goo.gl/photos/mLeLveRc7AnbAxEBA
Danmark SON
https://goo.gl/photos/u7CJcZp7i9RxnfEZ6
Selected Straight Grain made in London England
https://goo.gl/photos/BqrCdDH1oxKQH1Hu5
Pibe Dan Copenhagen 82 K 770 Hansen Briar
https://goo.gl/photos/iSkxNXWBRNCqA8N47
LJ Peretti Co. Imported Briar
https://goo.gl/photos/Z2kwBcAUT1eSiuN46
G.H.B. Bruxellss
https://goo.gl/photos/UJTWJTDCD3NfUAgd9