Old Style Numbers in Title

[Loïc Chahine]

Dear all,
In my scores, I use Adobe Caslon Pro for titles and other markups. But 
at least in the title, I would like to use old style numbers, because 
when I ‘Quartetto TWV 43:h3’ with big capitals for ‘TWV’ and big numbers 
for ‘43:h3’, I think it isn’t elegant. At least I can put ‘TWV’ into 
small caps.
Is there a way to use this Old style numbers? Adobe Caslon Pro has this 
numbers…
Thanks in advance for your help!
L.C.