token (BrE)/ (noun)

A piece of paper that you pay for and that somebody can exchange for something in a shop/store.

• Collect six tokens for a free T-shirt.

• a £20 book/record/gift token (oxfordlearnersdictionaries)

coupon/voucher

A voucher is a certificate or document that either allows you to purchase something or proves that you paid for something

(Vocabulary.com)

• The team also gives them vouchers for meals at sponsor restaurants. (Washington Times May 29, 2015)
• The vouchers are redeemable at a range of stores. (Washington PostMay 27, 2015)

token (BrE)/ (noun)

A piece of paper that you pay for and that somebody can exchange for something in a shop/store.

• Collect six tokens for a free T-shirt.

• a £20 book/record/gift token (oxfordlearnersdictionaries)

coupon/voucher (noun)

A voucher is a certificate or document that either allows you to purchase something or proves that you paid for something

• The team also gives them vouchers for meals at sponsor restaurants. (Washington Times May 29, 2015)
• The vouchers are redeemable at a range of stores. (Washington Post May 27, 2015) (Vocabulary.com)

token (noun)

 (British English) a piece of paper that you pay for and that somebody can exchange for something in a shop/store.

a piece of paper that you can collect when you buy a particular product and then exchange for something Collect six tokens for a free T-shirt.

• a £20 book/record/gift token (oxfordlearnersdictionaries)

token (BrE)/ (noun)

A piece of paper that you pay for and that somebody can exchange for something in a shop/store.

• Collect six tokens for a free T-shirt.

• a £20 book/record/gift token (oxfordlearnersdictionaries)

coupon/voucher

A voucher is a certificate or document that either allows you to purchase something or proves that you paid for something

(Vocabulary.com)

• The team also gives them vouchers for meals at sponsor restaurants. (Washington Times May 29, 2015)
• The vouchers are redeemable at a range of stores. (Washington PostMay 27, 2015)