No. If your quarter does not have a date it is because the date is worn down from circulation.
All quarters from 1796 to 1964 are silver and 1965 to date are copper-nickel
1964 was the last year the US produced silver quarters for circulation.
Simple, no quarters have ever been made in Delaware, the "D" mintmark means it was made in Denver.
US quarters made in 1964 and before have a silver value of about $5.13 as of today. They may have a higher value to a collector depending on their date and mint mark.
Niether US nor Canadian quarters have ever been made of zinc. Please check your coin again and post a new, separate question with its date and country of origin. US quarters were made of 905 silver and 10% copper until 1964. Since they they've been made of cupronickel outer layers bonded to a pure copper core. Canadian quarters were made of 80% silver, then 50% silver, followed by pure nickel and finally plated steel
All US quarters dated 1964 or before are 90% silver.
1876
Without a date it is impossible to tell. Silver quarters were made until 1964. Post a new question and include a date.
Quarters made before 1965 are prized for their silver content. They are made of 90% silver and 10% copper. The value depends on the date, mintmark, and condition of the but many are worth around $5 for their metal value.
1964 is the last date for silver quarters. To be annoyingly technical, 1964-dated silver quarters were actually struck for a while in 1965 during the transition to cupronickel coinage, but there's no way to tell them apart from coins made during calendar 1964.
25 cents, all circulation quarters from 1965 to date are made of copper-nickel,
All US quarters made before 1999 have an eagle on the back. Please specify a date.