For The Love Of Port

I need some quick information on the Leacock Verdelho Silver Jubilee Madeira 1952. I seem to remember seeing a complimentary note about it somewhere, but can't find it. Is this the same wine when Silver Jubilee is not on the note? Were there two bottlings that year of verdelho?

Thanks for anyone who can help. Urgent Christmas gift--want to send a brace of these to a cousin.