Panerai watches of 1950’s

My grandfather is celebrating her 75th birthday next week. I was very much confused in the selection of a gift. The gift should be precious and also should be loved by my grandfather too. While surfing I found a site for Panerai 1950 watches. The watches were so nice and costly too. But anyhow I have planned to gift one of the Panerai 1950 series watch to my grandfather.