'JAEGER LE COULTRE' watch case

[PRIMETIME]

Hi,
I'm still hoping someone can help me.

I'm urgently looking for a gent's stainless steel or chrome case to fit a 'JAEGER LE COULTRE' mechanical movement, calibre no. P478/C and case no. B683243.

Please let me know if you can help.
Many thanks.
Regards, Cathy.​