The top pair is listed as late 50s early 60s
The bottom pair is not listed in the Vegas Diceman book but 3 pair with the same bird are mid to late 60s
They are listed as 50 to 75 pairs known to exist but more may have surfaced as the popularity of dice collecting increases. Valued at $36-$45, but this value scale is out of date. Do not go too much by ebay pricing for dice as that all depends on who is looking at the time and how bad they want the dice in question. I have picked up some rare stuff on ebay for a bargain as well as seen common stuff sell for $$