Grey66,
Below are 2 links to a ID Discussion and Engine Serial number ID.
Basically, the data plate is the place to start. It is under the hood. It should contain a model number and production number. A plate is pictured in the 1st link.
The big number pressed in the firewall is the anti theft number. It was not used for title or ID purposes but some folks on this website could probably have some interesting comments on it.
The engine should have a serial number (see 2nd link) that would tell if is from the correct production year or a replacement engine. The engine block probably has a 'cast date' usually toward the back. It may be in raised letters along the bottom edge of the side of the block,
Welcome to Packard Info. Oz (our Down Under Ambassador) will probably respond soon. He is also aware Packard Owners and History there. Thereand are VERY activePackard Lovers there.
LINKS:
https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=3283&forum=4&post_id=34450#forumpost34450https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=2727&forum=14 Good Luck
DanL
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