Penny Post, that's a nice group.
For more machine cancels with a pictorial element, see:
https://stampsmarter.org/features/F...rn_Home.htmlsearch for both "collect stamps" and "collecting". This is far from a complete list. Since there seems to be at least a different design every year in the 1980s and 1990s, finding clean strikes from that time like yours is a challenge.