Ten envelopes. These are marked First Day Issue, cachet envelopes for the Canadian Bird Series. These are envelopes made that went with the same Bird Series stamps. This group includes 1- White Throated Sparrow, 5 Ipswich Sparrow, 1 Gray Jay of Canada, and 3 Hermit Thrush envelopes. Rare envelopes; hard to find. Not in MINT condition but very good, and it would be wonderful to send out a friendly old fashion letter to your favorite bird watcher.