The Charles W. Shonk Co. started in Chicago in 1891. The company became well known for producing tin lithographed trays and signs. In 1901, the American Can Company bought out the Shonk Co. and changed its name to Shonk Work. So this sign is from at least 1900, but more likely from the 1890s.
As you can see from the photos, the sign is a bit rough, with six or seven nail holes and surface rust from the weather. Luckily, most of the graphics are not affected.
The sign measures 13 1/2 x 6 1/2 inches. On the front is the large cursive “Burpee’s” above a printed phrase “Seeds That Grow.” What also makes this sign so rare is the logo in the upper right hand corner, three letters (W.A.B.) conjoined to represent the company’s founder—W. Alton Burpee.
In the bottom right hand corner reads: “Chas. W. Shonk Co. Litho Chicago. NO 3639. I’m pretty sure the four digits represent the phone number. Since Chicago changed from 4 digits to 5 digits in the late 1800s, the sign has to be from this period.
Luckily, the sign has survived these 130+ years. I’ve collected a lot of a lot of advertising over the years, but I’ve never seen a sign like this. I doubt I ever will.