Ok, I'll take a shot,

From under... The bottom of the bell looks like one (pronounced rounding), from top, bottom of same bell looks like one (small flat), I see the blunt squared hammering, (both sides of hammer) I won't touch on the trademark, but I say 20's. As for HH cymbal, no, there were no HH's in the 20's. Bd, low-boy, clapper.....maybe.

How'd I do, don't hold back ?

Musta had a bad day with the wife, he went to town on the top face !! Got it pretty round though.

You should snatch that thing up, it's only a buck.

K

(these additional letters are required by the forum in order to post)

Not a K. Italian.

It's not fair if you post without elaborating. How we gonna learn ?

What makes it Italian Zenstat ?

Why do you think it's K Hardbat ?

Lead by examples, Here's another I think it's K,... The stamp has the potential to be partial. and The bell bottom under it is pronounced rounded...... These are 20's K.

I'm probably the only one in the world that looks at Vintage K stamps and sees a precious metal's grade stamp set used.

Sorry about the brevity of my answer. I was having a strange network problem which has kept me from getting to VDF for many days. I've finally narrowed it down to the Apple Airport. I switched back (temporarily) to my older Dynalink router and that works. So it must be something different in one of the myriad settings. No other web sites were affected. I moved from the Dynalink to the Airport because the wireless support on the Dynalink quit working. But I was on the Airport for weeks using VDF successfully so I don't know what might have changed. My previous post was made on a Mac PowerBook leaning out the window using the wireless network connection from my neighbor (with permission) and I didn't have access to any of my usual tools, reference collection, etc. Now I'm temporarily back on my main machine but if I disappear for some days again...you will know why. Network problems.

The short answer to your question about why I don't think that one Drumaholic linked to is a genuine K is:

The trademark isn't a Zildjian trademark. The Arabic portion isn't right. The Arabic portion does share stylistic similarities with other Italians pretending to be Turkish in my reference collection.

The only English is Constantinople. I've got many examples of Italian cymbals which add the word Constantinople to try and look Turkish in origin. The K Zildjian stamp which first includes English (Type 1) has K Zildjian and Constantinople. Never Constantinople on its own like that.

The hammering with large dimples is an Italian style. The real K Zildjians of the same period don't have such large dimples.

The bell shape doesn't feel quite right to me on the one Drumaholic linked to, but I can't yet give metrics on why. I'm still working on that. Although there are differences between bells in terms of the sharpness of bell bow transition (and other shape components) I can't say what if any of those differences are diagnostic of Italian vs Turkish K Zildjian.

I'm also not able to say whether there are diagnostic lathing differences.

Yes that is a proper K Zildjian Constantinople Stamp 1 in your attached photos. In my records I haven't got any examples where a partial stamp has the entire line saying K Zildjian missing. Others may have such an example.

That isn't a large example but see if you can spot the differences in the Arabic portion when comparing that one to the one Drumaholic linked to.

Have a look at the hammering style on that compared to the one Drumaholic linked to. See if you can spot what I'm talking about as regards larger dimples on the Italian.