440 engine ID?

[Don Savard <res03r3f@xxxxxxxxxxx>]

Hi all,
  My 66 Crown has the following markings on the engine block pad:
  First line=============     B 444
  Second line==========        1    19
That's all- no Maltese crosses or other markings.
What does it mean?
Don Savard
65 Crown Coupe
66 Crown Coupe
67 Sedan
68 Crown FDHT