67 340 block

What date was it built ? Or post the numbers and I'll figure it out.

The first block is,
right side
6-20-67
night

left side
0497
2780930-340-5

10,000 day number- DW34023650196

The other block is,
right side
6-22-67
night

left side
0706
2780930-340-6

10,000 day number- DW34023840410

Someone gave me a chart but I lost it. Let me know what you find. Thanks, Dan.