They are referred to as stamps not logos. The primary purpose of the stamps is to identify and age a cymbal. I'm not a Paiste person, but, as you point out they are from the '60s since you bought them new back then. You haven't supplied the weight in grams. Other than potential resale value what else do you want to know.

Approximate value would be nice, but I'n not interested in selling them. I just want to know as much about them as I can.

Ludwig Standard Paiste 14” cymbals (760 & 770 gr)

18” Zildjian crash cymbal (1550 gr) and 20” Zildjian ride cymbal (2130 gr)

You know what they are, you know when they are from. You know the size and weight and you can see the condition. How they sound is not something we can help with without hearing them. What else do you think there is to know besides value?

What are they made of?

Where were they made?

How long was that particular stamp in production?

Etc.

Can't comment on the Paiste because I'm not interested in them. The Zildjian stamp you show is the standard stamp used by them in the 1960's. They were probably made in the Zildjian factory in Norwell, Massachusetts, but not sure when they made the move there from Quincy, Mass. Your Zildjian, like the other professional quality cymbals they make uses B20 bronze made from their own secret formula. While earlier Zildjians were partially or fully hand-hammered, your cymbal is completely machine hammered I believe.

Check out the Paiste-Only Wiki for what little info there is:

http://www.paiste-only.com/paistewiki/index.php?title=Ludwig

The 14" Thin High Hat is itself a link to

http://www.paiste-only.com/paistewiki/index.php?title=Ludwig_14%22_Thin_Hi-Hat

It says Germany on your stamp so it was made in...Germany.