A few years ago, I acquired a 1981 Lincoln Telephone & Telegraph Company (Nebraska). In their product guide it listed Diplomat was available in beep blue. I had thought this was a miss print. But, lo and behold I recently found one...
Congrats! Nice color, reminds me of WE Mediterranean Blue.
Very nice find.
You should put it in March 2020 find of the month.
http://www.classicrotaryphones.com/forum/index.php?topic=23561.msg235918#msg235918
JMO,
Jim