The Pantera vendors should all have the bottles.
http://www.pim.net/17.1pim.html
http://www.precisionproformance.com/ft1162.htm
http://www.hallpantera.com/price%20list.htm
If the Pantera vendors don't have it, they're also available from Jaguar parts vendors. I think item #6 in this link is the same bottle, but I would need to check the drawing against mine at home:
http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateI...ID=33037&SortOrder=7
These were secured with a leather strap wrapped around the bottle's waist.
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