T&L Publications

I Have a transformer manufactured by TAM in the UK. It has 3 different numbers on it:
21B108
M8517
166B2277-10
I'm trying to determine its input and outputs. I've tried different websites to no avail. Anyone have any ideas without just trial & error
hokups?

The chip is an 8 sound generator for a project I found online. I could use a sub but I've tried Mouser and Jameco and can't even get them to suggest a sub. If you know of a sub I could use I would really appreciate it.

Anyone have any source for an HT2884 which has been discontinued by the manufacturer. All the "hard to find semi" places want me to fill out a ton of info in order to get a "quote". Really hoping someone might know of a place with some on hand.