Need help dating tailcoat, waistcoat, trousers

[RhythmClub]

Hi. I have an old tailcoat, waistcoat, and trousers (is there a collective name for this, e.g. "suit"?) that I'm trying to date. Any help would be greatly appreciated. Here's the info I have (pictures follow):

Tailcoat

• No outer pockets
• 1 inner pocket
• No tail pocket
• Wool
• Does not button
• Straight across front (doesn't dip down with points)
• Tag in pocket says "Hart Schaffner & Mark Makers"
• Tag near collar says "The Gano Downs Co. Denver"

Waistcoat

• 4 buttons
• Opening dips down fairly low and is curved
• 3 outer pockets
• Front is wool, back is fabric
• Lined
• No label

Trousers

• No label
• 5 + 1 buttons
• 6 pockets
• Unlined

Many questions!

• Were these pieces usually bought together?
• Were they usually made by the same manufacturer, or were they bought piecemeal?
• Any idea on dates?

Thanks very much!

 

[RhythmClub]

After doing more research on these, I seem to be narrowing it down to somewhere between 1911 (the year Hart Schaffner & Marx were incorporated) and the end of WWI (since pointed tailcoats and waistcoats seemed to be more in fashion after that). Is this sound thinking?

 

[poppysvintageclothing]

My first impression on this was early 30s...perhaps some others will have an opinion.

Too bad the date was not indicated on the lining around the breast pocket, it often is with the original owner's name.