Hi Simon,
try here:
http://www.ebay.it/itm/WE-SELL-CHEAP-Heuer-11-12-15-Vintage-Chronograph-SS-watch-big-crown-NOS-/390600086585?pt=UK_Jewellery_Watches_WatchAccessories_SpareParts_SM&hash=item5af1945439

or
here:
http://www.ebay.it/itm/WE-SELL-CHEAP-Heuer-11-12-15-Vintage-Chronograph-SS-watch-crown-stem-/350800890377?pt=UK_Jewellery_Watches_WatchAccessories_SpareParts_SM&hash=item51ad5cca09

Cheers
Giuliano

: I'm after some help with my Montreal please. I have found a lovely
: 110.503NC and want to send it off for service before I wear it
: but it has an incorrect replacement crown, and I'd like to get
: it replaced as part of the service. I've asked Nic, Stewart and
: Jasper but they can't help, and had no replies to a request on
: the sales forum here.

: Do you know where I can get a correct replacement Montreal crown
: please?

:
:

: Thanks!
: Simon