depends what pieces you have with it
There is no record of the Royal Mint having produced a "gold" Proof set in 1974, only the usual Proof set. Royal Mint gold Proof sets issued from 1980 contain only the "Sovereign" coinage.
Cupro nickel would be worht around £2.50 - £4.00 if in a Royal Mint presentation pack. Silver Proof variety would be more in the region of £15-£25 if in a Royal Mint capsule, with certificate & case.
All Proof coins are sold by the Royal Mint in sealed protective packaging to protect the condition and finish of the coin(s). Proof coins may also come with a certificate of aunthenticity. Apart from that, Proof coins have a very high quality finish and are priced well beyond the face value of the coin. Proof coins are most unlikely to be found in loose change due to their high value.
What is value of proof set of Commonwealth of the Bahams proof set 1974
150-300
I have a 1947 new international atlas of the world deluxe edition?
The current value of a 1962 US proof set is $29.
Value for a proof 1962 is $10.00-$12.00
The current value of a 1950 proof set is $750.
The value of a 1984 Canadian proof dollar is about $12.
The value of Royal Sealy pieces can vary significantly based on factors such as age, rarity, condition, and specific patterns or designs. Generally, these items are considered collectible, with prices ranging from a few dollars for common pieces to several hundred dollars for rare or well-preserved items. Collectors often seek out unique patterns or limited editions, which can command higher prices in the market. For accurate valuation, it's advisable to consult price guides or appraisers who specialize in vintage china and ceramics.