C1 engine casting number

[Richard P.]

I have a block with engine casting number 3756519 that is barely readable because of slag cast in and around the digits. I have probed it with a punch to see if it has been altered with some material other than metal, but it seems to truly be just a casting flaw. The date casting (K258) is clear and it has the pipe threaded hole above the timing chain indicating a flint block. The stamp pad says F120ID. My question is: has anyone else come across a block with this slag in the casting numbers?
Thanks

[John T.]

Re: C1 engine casting number

Short answer is yes. I have seen several and I have an 870 block with such slag.

Hope this helps.

John

[Richard P.]

Re: C1 engine casting number

Thanks John. Do you think this would be detrimental in judging or in the value of the block in selling it?