Here’s the latest from my friend.
He said it’s obvious the block with the production casting number and the “0” number shows it was cast just before the actual production number.
He said the foundry would cast a number based on what the order states. If an order comes in with some slight change the division requesting the part number many times would actually pick up a phone and call the foundry. It’s very possible the “1” in the location usually reserved for the date was the foundry’s way of identifying when a change had been made. He indicated this was very common and especially in this case since both casting numbers are indicated.
So, bottom line, some kind of production change and this would have been the first one cast. After this if the change was acceptable then the “0” would be removed and regular production would begin with that location utilizing the casting date.
That’s all for now.
He said it’s obvious the block with the production casting number and the “0” number shows it was cast just before the actual production number.
He said the foundry would cast a number based on what the order states. If an order comes in with some slight change the division requesting the part number many times would actually pick up a phone and call the foundry. It’s very possible the “1” in the location usually reserved for the date was the foundry’s way of identifying when a change had been made. He indicated this was very common and especially in this case since both casting numbers are indicated.
So, bottom line, some kind of production change and this would have been the first one cast. After this if the change was acceptable then the “0” would be removed and regular production would begin with that location utilizing the casting date.
That’s all for now.