There's the engine serial numbers database :
https://packardinfo.com/xoops/html/modules/article/view.article.php?c17/246 377464 looks like a 1934 eight (320 ci) casted on 12/12/1933
388969*c looks like a 1935 eight (320 ci)
I'm by no means an expert, but that's the quick conclusion I draw. If the second one is a 35 for sure, I'm interested in buying it if you are willing to sell it.
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=169407