Fake Or Real Daalder Coin (Id: 1641 Overijssel Daaler)

Two dots after the date is also known, although the date on this one looks looks different from yours.
https://www.acsearch.info/search.html?id=4714120

I don't know enough to comment on athenticity

Although about 1.2 grams underweight the coin looks ok to me. I think it is authentic. The two dots are not significant as there are many varieties and these coins were carelessly made.

Your daalder is listed as number 856 in the Delmonte Catalog. It is from the province of Overijssel. The mint is indicated as TRA which stands for Transisalania. On some coins the abbreviation is TRAN or TRANS. The same indication is used for the Utrecht mint then TRA stands for Trajectum. Sometimes abbreviated as TRAI. On the Utrecht ones there is a small shield, the arms of Utrecht to the right of the knight's head. This shield is missing on your coin thus it mudt be from Overijssel.

I would grade it as VF. The flat areas are probably not fully stuck up because of an irregular planched an/or worn dies. These coins were carelessly made as is evidenced also by the irregular shape of the planchet.

One addition. The coin shown in the link given by @tdziemia is a lion daalder from Utrecht. The Utrecht shield can be clearly seen between the head of the knight and the first letter M of the text.

To answer your question I used information in a report of a hoard found in Palestine: https://library.alistiqlal.edu.ps/b...6517-ar.html This hoard contained 298 original Dutch Lion Dollars. 6 of these were clipped and the average weight of the rest was 26.90 grams. Lower than the prescribed 27,68 grams. The specification was checked at the mint by weighing a prescribed number of coins. This means that in a batch of coins issued there would be specimens of both a lower and a higher weight than prescribed. Furthermore the mint master was allowed a production margin of 0.07 grams. In order to maximize his profits the mint master would have used this margin. The low average weight of the coins in the hoard was attributed by the authors of the report to the process of "culling". In this process the coins with a weight above specification are be removed from a batch of coins. These "heavy" coins would then be returned to the mint for melting and recoining which yields a small profit. If this coin came from a culled batch then a weight of 26.53 grammes would be normal. Especially if a small amount of wear is taken into account.

The average weight of the 6 clipped Lion Dollars in the hoard was 24,24 grams, substantially less then the weight of this coin. So I think it is unlikely to have been clipped.

I agree with @tdz. Thx @elgius for your insight--well done. It is especially interesting to note that due to the bulk lot measurement (as opposed to single coin measurement), there were plenty of low weight coins being released into commerce.

Thank you for the valuable discussion

I agree, thank you.