The J-8 horizon, or other models just like it, were typical in the war surplus pistons that I started on. You did have to cross check with the needle/ball after rolling out of a longish turn.
Centaurus...I seem to recall the Collins 108 had a flight manual note to avoid bank angles of less than 6° to avoid gyro precession? I do recall them prone to succumbing to local gravity after a long gentle turn on the -200 and Convair 580.
Regarding the Airbus ISIS: I wondered how that instrument got certified after noting that it displays a significant bank error after a turn. Not useful behaviour in modern times in my view, and hardly helpful in what could end up being your sole attitude reference.