Guess I might as well at this point
https://photos.app.goo.gl/weRnfhPQeB4bWbii7
https://photos.app.goo.gl/5sGdpTn89JXW2cjf7
https://photos.app.goo.gl/xvLEXwRLixW967L79
https://photos.app.goo.gl/D7ZB3yK9nuZTn8yi9

This is the best I can make out of the block VIN...Joe

Thanks, Joe. Those were the only pics I had on my phone. I'll try to post up some of the pics from the computer when I get back to work.

I think what you're doing for that car is wonderful. Sure would like you to take us on your jouney of progress...Joe

Bergy,

The last time I posted a pencil tracing of a portion of valid stamping publicly here the administrator came in to the thread and promptly deleted it.

sorry it took so long guys. i'm horrible with computers.

.

Thanks. I'll let the experts chime in, but looks pretty good from here. My FG COPO had a POP with T0123MN assembly date. Same characters :-)

Block casting number is ‘270?

Yes. Block was cast Sept 4, 1968 and was assembled Jan 22, 1969. Car is an 03D date.
WorkinProgress says he has an MN coded 270 block that was cast and assembled on the same dates as this one and was installed in an 04B car.
I have heard of at least one -possibly two other MN 270 blocks from other members of this site. I'm waiting to hear details...the one guy thought his was in an 05A car that he doesn't own anymore. That's all I know right now.