BTW, the 30s date was based solely on the perceived height of 1 1/8inches. I did not research further into the 30s stamp, just posted here. Like I said, pretty sure on the 70s date now - just trying to maximize my education here. BTW, anybody ever try to clean cymbals by soaking in Dawn? I have used it before, but not soaking. I wonder if it would have the same effect it has on Chrome HW (great). Thanks,John

Well, after about an hour of more research and looking closely at this and closely at that, I would have to concede to Mr. Hartrick that these are most likely 70s (though I would very much welcome and appreciate more of his input). It is just real hard to be confident about that date because there are no signs of a Hollow logo, there is alot of ware, and the color is so patina(ed) compared to other 70s Zildjians that I have. Weight leans it towards the 70s, the lathing-I simply am not sure. Here is a stamp pic-with a ruler. It hints at 1 1/8, but upon closer analysis, it appears that the top of the logo is wore off or not impressed, and therefore is sorta cutoff - which implies it would be measured at 1 1/4. This lands it in the "early 40s, late 50s, and most of the 70s". Are there other aspects of the stamp which make it a sure elimination of the 40s and 50s? The stamp is deeper on the left side than the right. I have read and seen the deeper outside edges, though have also read that that is not always consistent either. I am leaning toward the 70s, just seeking confirmation of that. BTW: Here is an auction of some hats I sold a couple months ago. Did I date these wrong?http://www.ebay.com/itm/320822836003?ssPageName=STRK:MESOX:IT&_trksid=p3984.m1562.l2649#ht_500wt_1287Of the several pics......tried to show the lathing a bit, also show the heavy patina on the top sides (both cymbals darkened like that).Thanks for your input all,especially Mr. Hartrick,Best Regards,John

It is just real hard to be confident about that date because there are no signs of a Hollow logo