This 92-cent set of blush and black, vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This 92-cent set of pink-colored vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations.

This 94-cent set of purple-colored vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This $1.06 set of natural green, whimsical, vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This 95-cent set of green-colored vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This 95-cent set of mint green and blush pink, vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This $1.01-rate set of dusty blue-gray, vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This $1.01 set of blue-colored, vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This 96-cent set of golden-yellow, vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This 96-cent set of ivory, vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This 95-cent set of sepia-toned vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

This 92-cent set of black and white, vintage, unused postage is perfect for mailing thick, square or heavy wedding invitations up to 2 oz.

Vintage Postage: Color Sets