48GX Custom ROM Card by Ford?

[Raymond Del Tondo]

(03-16-2019 03:26 AM)Abby94 Wrote:  I received a 48GX today that contained what appears to be a custom ROM card (was supposed to be a RAM card). There’s no battery and no W/R toggle.
[..]
Just bare metal.
I’m curious to find out if the ROM card was produced by/for Ford or perhaps the engineer himself. And is there a way to determine who the manufacturer of the custom card was?

You could send a few pics of the card.
If the housing has a light grey color then it could be an EPSON OTP or EPROM card.