This a Vintage 1930's or 1940's Monark Silver king built Wards Hawthorne aluminum mens bicycle.   Aluminum tubing constructed using "mushroomed" tubes and chromed steel fork blades with no suspension.  Aesthetically the frame is in pretty good condition and has a nice patina (ok, lots of patina) from over the years - fun to polish up and make it mirror shiny.  The bike is not quite original.  Wheels, frame, fork, fenders, and dropcenter stand are the only likely original pieces left.
The fenders have several dings and dents, and they do not have the front and rear lamps/accent pieces.  Tires hold air but aren't even close to original - both built overseas.  The bike is rideable but will require a complete overhaul of the drive train to get back to fully operational. 

Very cool bike and with a little (alot) tlc and elbow grease would make for a great project bike.

Year is most likely late 1930's or early 1940's.
This bicycle has the triple step lobdel rims, round shaped stainless fenders, and the straight steel truss rods.

Monark was a unique company that had its start as a battery manufacturer from the early part of the century.  There are quite a few art deco touches on all of the aluminum models from Monark Silver King.  Lights, head tubes, rear stays, bottom brackets.  The designers must have had fun going from batteries to bicycles.

Monark began building aluminum bicycles under the name Silver King in the 1930s and continued their production into the 1950s. Their unique style and light weight made them extremely appealing. Silver King also developed a monthly payment plan, making their purchase a bit more palatable for depression era consumers on a tight budget.

Made in Chicago, IL, U.S.A.

**Missing original tires, pedals, seat and seatpost, stem, bars, and crankset
**Not rideable as there are no brakes - the rear hub needs a complete overhaul

Measurements:

Seat Tube measures 19" (top to center)

Top Tube measure 24" (center to center)

Specifications:

Schwinn kids saddle, small and looks uncomfortable
Steel Quill Stem, (not the winged stem), no chrome, not original

Steel (not the nice aluminum) Cruiser Handlebars, not original and no chrome left

1 Piece steel  Crank Set, not original rough chrome (no chrome)

pedals are mismatched and probably not original

Rear hub is a Mussleman coaster brake, the front hub is an unmarked hub with no chrome or paint - but no rust either
tires -  not original

Rims - Lobdel triple step 24"  steel rims, showing some rust

Serial #42046 (under the unistay chainstay)

Reference #71276