Is it correct, that underneath the cast iron cylinder block of a Type 57 the engine number is located in the middle of the eight outlets (between fourth and fifth)?

On my block, I find three different numbers at the place described above. One with three letters, below another with one, and one with two letters.

Thanks for your input!

for example
110
2
38
I think this are casting numbers and not engine numbers

What numbers do you have ?

my numbers are:
410
2
36
I think the first number could be the motor number; the second maybe the series number; the third could be a casting or production number.
Thanks for your information!

I am not so sure about the engine number . I think the last number is the year , like 1936 and 1938 . No idea about the number in the middle . I have more blocks , I will look .