Thanks Gary. I hoped what little I've got might give a ballpark idea. But no guarantees of course: you get what you get on the day when you sell them. Prices are really quite variable when you get to the level of individual pieces. I just noticed that if the larger diameter one is 18.5" then it is more like a notional 19". They did make 19" cymbals but they aren't as common. Not as in big price premium rare, but just not so many of them out there. I've got one 19" New stamp recorded out of maybe 230 sales (all diameters). So no price info, and using the 18" info is maybe a bit low. You could factor the 20" OS data into your thinking as well:[img]http://black.net.nz/cym2015/20-OS-K-2.png[/img]but a notional 19" would still sit below the low end of the 20" price range. For reading this table, -3 under bids means the auction was stopped and I've recorded the asking price (or current bid when it was pulled). And "munted" as in "hole munted" is a local slang term meaning "damaged". We refer to Christchurch after the Earthquake as "mega munted" which "severely damaged". NOS in condition is New Old Stock. I've got a whole page of codes and meanings...Those old Ks aren't usually exact inch sizes (usually a bit undersized) so one has to make do. Even modern cymbals made in Turkey seem to continue that tradition of being a bit undersized. Usually people just refer them at the "notional" size and that's how I record them in my database as well.

I have two "20"" new stsmps. One is 19.5 inches, the other is very close to 20" but just a fraction undersized. I guess that's a factor of the nominal inch versus mm designation as well as the vagaries of manufacturing by hand.

Very much a mix of factors. You don't buy cymbals by the inch. Or at least not very accurately. Some years ago I had a look at what the ink size says on some cymbals vs the actual diameter. That's for old Ks, Bosphorus, Istanbul, UFiP, Paiste (yes they vary!) and Sabian. It turns out that different manufacturers have different ideas about what to target in an "even" metric size which then then also label with an even "inch" designation. And it varies! It varies between manufacturers and it varies over time for the same manufacturer. It's a mish mash. For example, UFiP has at times said that 50 cm is 20" (it is 19.685"). But other even metric sizes used to get close to 20" include 51 cm (a slightly generous 20.08"), and when you actually measure some cymbals they fall in between: like my Agop which is inked 50 cm / 20" but is actually neither of those. It is 50.5 cm or 19.88". So closer than the Bos because it doesn't do what the ink says it does! *sigh*Much of what seems to be driving the undersizing in cymbals made in Turkey is simply inaccuracy of hand done circle shearing. This may be further compounded by targeting an even size in mm or cm which isn't the exact inch equivalent. But the inaccuracy of hand shearing is enough to account for much of what we see. As you get back into old As (particularly mid 50s and earlier) the same free for all in actual diameter obtains. I've got trans stamps which aren't even trimmed into a particularly accurate circle. They show no signs of having been tampered with, and they sound fine. But they are a bit undersized and not perfectly round.