Please add the following

Latest version of reference contain lev and stotinka for Bulgaria.
Trial is a pattern coin (https://en.wikipedia.org/wiki/Pattern_coin)? Pattern type present in latest version of reference.
Quality field placed at Minting section of Parameters tab.

PS
You can add missed data in reference by yourself.
For get a latest version of reference move or rename your current reference.ref file.

Hi.
There is information here, what's the difference between Trial Piece, a Pattern and a Specimen
https://www.chards.co.uk/blog/2017-one-pound-trial-coins/68

"...What is the Difference Between a Trial Piece, a Pattern and a Specimen?

A Trial Piece Coin is any coin including patterns, made in a different metal from the normal production metal, and produced to test the dies or preview the design. Lead is often used as it is very soft, and trial pieces are normally struck before the dies are completed and hardened, so that minor changes can still be made before the dies are hardened.

A Pattern Coin is a coin, official or otherwise, produced as a suggestion or trial for a new or replacement design denomination, size or some other innovation.

A Specimen Coin is a sample that is a representative example of its type or class. A specimen may be issued in a variety of finishes; uncirculated, proof, matt proof. Specimen coins and coins sets were often made available to VIPs, mint officials and coin collectors.

As a coin dealer, we often have trial coins, specimen coins and pattern coins (individual and in sets) which were issued prior to a change of coinage. In the past, it was possible for serious coin collectors to buy the sets direct from The Royal Mint or from selected banks. These included the 1887 Victoria Jubilee Invariably, some sets issued to banks were set aside by managers who passed their coin collections to family members..."

I found Quality and I will add Units hand..