This book, compiled by Peter Laidler, is a must for any student or collector of British issue long arms of the 20th Century. If you have ever wondered what the stamps on your buttstock marker disc meant, or if you want to research what would be appropriate for the replacement disc that you have just fitted, then this is the book for you.

The book is A4 sized with soft card covers; it contains 24 pages crammed with tables and illustrations of all the known official unit codes for the marking of buttstock discs. Included in the book are listings for the Regular Army, the Militia, Territorial and Yeomanry units, Supplementary and Emergency Reserve units, OTCs and OCTUs (Schools). Highly recommended.