Photographic conservators prefer envelopes with no seams or adhesives for many types of photographs, including tintypes. Popular late in the 19th century, they were generally produced with a protective cover to protect them but the vast majority of these have not survived. The most common tintype size is roughly 2.5 x 3.5″. Our four-flap envelopes resemble a “plus” sign when open flat. The tintype is placed in the center and the four “flaps” on each side fold up to securely enclose it. Notes can be made on the outside of the envelope. We manufacture these from our non-buffered, neutral pH paper (approx. 7.0) in accordance with preservation standards for photographic images. The four flaps will hold up to 2.75 x 3.75, allowing for the slight variation in size often seen in these early photographic processes. Packages of 10 four-flaps.