Thanks, Johnny! IHard to tell if goat by pic but collar is almost certainly man made I think called Dynel(?) but others here will tell you more!
Thanks for the information! With all the different contracts and manufacturers, it gets confusing (for me, anyway) trying to figure out who made what jacket out of what material!The collar is typicaly Dynal ! The fun thing is that Brill Bros. made in the same contract (8415-268-7800) some 7823D with mouton collar and some with Dynal after 1969...
Here's a 1968 Brill Bros. 7823D (8415-268-7800, DSA 00-68-C-1805) with a russet mouton collar I found for a friend of mine (next to his 1975 7823E Star)
Fun fact, the 1970 7823E from Brill have the same Dynal collar but the leather is absolutly different (classic 70's light brown "milk chocolate")