Courtesy Of The Milkman

If you find any souvenirs of the days when milk was delivered in glass bottles, be careful because a single nick in the glass could cost you $50 or more.

Round bottles were the earliest containers, but most companies changed to a square shape around 1950. But both shapes and many sizes are worth money to collectors.
The Saturday Early Show's Collectibles Expert Tony Hyman, author of Trash or Treasure: Guide to Buyers, takes a look at collectible milk bottles.

Popular figures such as the Cisco Kid featured on a bottle could bring $200. Others in the $1 to $500 range show Hopalong Cassidy, Rocky Marciano or Mickey Mouse.

A few bottles have bulbous necks to trap the cream. One shaped like a baby's head is worth at least $200 and a policeman bottle intended to "cop the cream" adds up to a fast $300.

Most colored bottles are valuable. Some amber ones can fetch $250. Many blue bottles are usually cheap reproductions, however. One green-colored bottle, an Alta-Crest model from 1929, is worth a whopping $1,200.

The Holy Grail of milk bottles is a 1950 ruby red bottle from Borden. If you can find one, it'll bring you $2,500.

Remember only bottles in perfect condition are sought. If your bottle has cracks, bad chips, stains or paint worn off one or both sides, it can go straight to the recycling bin.

For more on collectible milk bottles, Hyman recommends Ralph Riovo, a long-time collector. He will answer questions regarding milk bottles and Borden's Elsie the Cow. His email address is thepurplecow@erols.com.

If you think you have a collectible worth a lot of cash, send an email to sat@cbsnews.com with "What's It Worth?" in the subject line. Or write to "What's It Worth?" The Saturday Early Show, 514 West 57th St., 6th floor, New York, N.Y. 10019.