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>These were very easy to break. Dropping one could break it. These older recording were played at 78 RPMs, as opposed to 45 or 33 1/3 RPMs of its successors.
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>I have a small collection of 16rpms at home, is that prior to 78rpms?
What is on them? They might date from the '60s. I thought that those were DJ records, often larger than 12 inches. My housemate has a huge record like that from her DJ days, but I don't know the rpms.

Uh, oh, thread drift. Coming soon to the chatter forum, I'll bet.