In addition to the obvious things, like overall metal and wood condition, bore, and headspace, there are some other things to look at when contemplating purchase of an M1917 Enfield and how much should be spent on it.
- M1917s were made by Eddystone, Remington, and Winchester and virtually all bits and pieces are marked with the letters E, R, and W respectively. An original rifle will have all parts coded to the maker. All matching parts plus condition sets a premium price.
- Original metal finish was blued, except for some of the very late Eddystone M1917s which were finished in black parkerizing. Many rifles which saw service as training rifles in WW2 were parkerized. Stocks on US WW2 re-built rifles may also feature various arsenal stamps/ cartouches on the stocks.
-original barrels will be month/date coded in the 1917-1919 timeframe and so marked on top of the barrel behind the front sight. Barrels with WW2 dates are replacements.
-A fair number of ex-Danish M1917s came on the market in the 1990-1992 timeframe. These can be identified by the s/n stamped in the ventral surface of the buttstock (a Danish convention which you also see on most ex-Danish M1 Garands). S/ns were also stamped on the bolt handle(not a US practice). Some, but not all, ex-Danish rifles have a milled cutout at the rear of the receiver ring and some will have a vertical roll pin in place of the normal front sight blade. Parts are also jumbled by maker's code indicating overhaul/repair. These are generally very sound rifles.
-M1917s were also used as second line weapons by the Brits and Cdns in WW2 and may feature a number of distinctive Brit/Cdn markings, incl a red painted band around the forestock, unit/regimental stampings, Brit disposal/sale stamps and the C/Broad arrow stamp. Some of the Danish rifles have the C/broad arrow as well indicating transfer and use post-WW2.
-Back to the original topic of this thread, a "DP" stamping on the metal or stock indicates drill purpose use only. As a rule a "DP" stamped rifle or critical component, like a bolt, should not be used for live fire. There was a reason why the part was inspected and classified as DP in the first place. Folks can do as they choose, but I won't fire a DP marked rifle or bolt component.