Another Unknown Monogram - Hilton?

[hpidaves]

I've run a cross these before and always assumed they were Hilton, but after looking around online, I'm not so sure. It is marked INTERNATIONAL SILVER CO on the back of the handle. I've searched for every major "H" hotel chain I can think of.

Any thoughts?

Thanks,
Dave

[hpidaves]

Not sure if this helps, but the pattern is Hutton, International Silver, 1960.