a complete list does not excist. 1/3 of hallmarks are lited in a book - its sold out - in the 80ties. I could not find a match. And I have problem reading your mark. There are a few masters whoes hallmark are similar. So it could be theirs. But I cannot point at one specific.
The year. Masters should make a new mark every year - so in theory is would be possible to date. But in reality the reused their old marks for several years. Its very comeon to se one year in the 3 towers mark and another earlier year in masters mark. That is normal. Illegal but accepted by everyone. The last is month mark. Thats a tax mark.
i have counted 9 possible. We cannot roule out the some 3 letter makers are possible. Worn hallmarks. Some use 3 letter one year and 2 letter next. I have loked at makers where second last letter is l but a worn p cannot be rouled out. I looked for shape of mark - very common in this period. I ended up with 9 candidates and we still have missing makers. Another possibility is an out of town maker. Silversmiith outside Copenhagen could have their work hallmarked by the Copenhagen guardein. Silver from Copenhagen was considered better.