Needing starter cores with these part numbers: 2875560 and 2875553

[198D13]

I am needing various dates for both halves with the above part numbers. See the following pictures for details. PM me if you can help. Much appreciated.
Thanks!

[198D13]

Next picture, closeup of date stamping.

[198D13]

Picture of barrel with part number.

[198D13]

Picture of barrel with close up of part number and date.

[AlmostNOS]

Did you find a good core

[198D13]

No, not yet, I'm still searching. Do you have any? I sent you a PM yesterday.

[torredcuda]

I need to check my stash.

[198D13]

Please do!

[Locomotion]

PM sent.

For whatever reason, it seems that I may not have been able to send a PM!
I haven't heard back from another individual yet, but I have a starter with 2875553, 05102 and what appears to be "70" on the aluminum body.

Unfortunately, armature housing is 4111855.

Florida 32117

[Mr Cuda]

Found a couple.  Haven't cleaned to check date code.   How many years did that part number run till it became a 375xxxx?

[198D13]

Found a couple.  Haven't cleaned to check date code.   How many years did that part number run till it became a 375xxxx?

It ran from the start of 1970 production(gearing up for production, etc, the earliest date I've seen on the barrel is 249(twenty fourth week of 1969), that part number, 2875 560 was still used up to sometime in 1972. I've seen cases dated April 1969 up to late 1972, part number 2875 553.

[198D13]

Found a couple.  Haven't cleaned to check date code.   How many years did that part number run till it became a 375xxxx?

When you clean them, do not use any kind of media that typically would be used in a blast cabinet, etc,  doing so will permanently deface the aluminum case, and won't do much for the barrel. Hot soapy water works best, with an old toothbrush or something nonabrasive like that.

[torredcuda]

I found a 2875553 half with a 72 date code and I think a 2875560 barrel but the first part of the number is too faint to read.