Here you have a hand-picked piece of history, the positively sought after and revered "K Istanbul Old Stamp". At 18'' (Technically 17 3/4" because all K Istanbul are slightly undersized), it is one of the most versatile cymbal sizes for jazz, as well as other styles. It's drilled for rivets for that warm sizzle we all know and love, but none are installed or included, so it's up to you.
As time passes and life takes its toll, these pies are getting fewer and far between. This one is a great example of craftsmanship, with some keyholing as seen in the pictures, but the edges are surprisingly smooth with only a few "rough spots" or minuscule flea bites to expected from a cymbal so old. You can see this in the pictures. It has patina for days and I wouldn't want it any other way. Enjoy the pictures and purchase with confidence. A true collector's item.
This is one of the best sounding cymbals I've ever owned, and I'll be sad to see it go, but happy it will be played more.