Small block casing info

[ULC Soulagent]

Evening all,
Been going through my Sb casings and came across one that I picked up for £80 a few yrs ago.
It’s stamped with the number beginning *4291@@* but no model identity at the start.
It also has number stamped into the drive side engine mount arm *044063*
And finally on the inside Innocenti stamped with numbers 22 01 0061
Along with a uppercase M inside a circle
Anyone have a clue of it origins please.
Cheers
Shane

[rossclark]

How many ribs on the flywheel side engine mount lug?

[ULC Soulagent]

How many ribs on the flywheel side engine mount lug?

3 central main and 2 outer ones

[rossclark]

That makes it an Indian casing, for sure.

[ULC Soulagent]

That makes it an Indian casing, for sure.

Many thanks Rossclark