In my opinion the cards are on average in NEAR MINT condition, but please decide for yourself. All cards are sleeved to keep them in this condition.

Complete Series 2 set consists of 72 cards and in addition, there were 27 bonus "chase cards" not included on the checklist. These chase cards consist of 12 die-cut embossed cards, 10 animation stick-on cards, and 5 clear cards (1 every 9 packs).

Complete Series 3 set consists of 72 cards and in addition, there were 27 bonus "chase cards" not included on the checklist, including 12 die-cut embossed evolution cards, 10 pop-up cards, and 5 clear cards (1 every 9 packs).
This lot are the 5/10 CLEAR cards from both series 3.

The Topps Company, Inc. is a company that manufactures trading cards. 

Although they are most well-known for manufacturing sports cards, they have made 9 regular Pokemon trading card sets and 2 promotional Chrome sets.

See BULBAPEDIA (Pokemon wikipedia) for information about these TOPPS sets. #9